AR-15 style rifle

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AR-15 style rifles come in many sizes and have many options, depending on the manufacturer. The part shown bottom center is the lower receiver without the receiver extension, rear takedown pin, and buttstock.

An AR-15 style rifle is any lightweight semi-automatic rifle based on the Colt AR-15 design.

The original ArmaLite AR-15 is a scaled-down derivative of Eugene Stoner's ArmaLite AR-10 design. The then Fairchild Engine and Airplane Corporation division ArmaLite sold the patent and trademarks to Colt's Manufacturing Company in 1959. After most of Colt's patents for the Colt AR-15 expired in 1977, many firearm manufacturers began to produce copies of the Colt AR-15 under various names. Despite the patents expiring, Colt retained the trademark of the AR-15 and is the sole manufacturer able to label their firearms as AR-15.[1] Although Colt owns the AR-15 trademark, the "AR" in AR-15 stands for "ArmaLite Rifle", not "assault rifle".[2][3]

The Federal Assault Weapons Ban restricted the sale of the Colt AR-15 and some derivatives in the United States from 1994 to 2004, although it did not affect rifles with fewer listed features.[4][5]

After the term modern sporting rifles was coined in 2009 by the US National Shooting Sports Foundation, a firearms trade association, it was quickly adopted by much of the industry.[6][7]

In the 2010s, AR-15 style rifles became one of the "most beloved and most vilified rifles" in the United States, according to The New York Times. The rifles are controversial in part due to their use in high-profile mass shootings.[8] Promoted as "America's rifle" by the National Rifle Association, AR-15 style rifles' popularity is partially attributable to proposals to ban or restrict them.[9][10][11]


The "AR" in AR-15 stands for "ArmaLite Rifle", not "assault rifle".[1][2][3]

The Colt AR-15 is closely related to the military M16 and M4 Carbine rifles, which all share the same core design, first patented for use in the AR-10, featuring a gas-operated, rotating bolt (combined with an integral piston) instead of conventional direct impingement, operating system patented under U.S. Patent 2,951,424 by Eugene Stoner.[12][13] The term "AR-15" is now most-commonly used to refer only to the civilian variants of the rifle which lack the fully automatic function.[14]

1973 Colt AR-15 SP1 rifle with 'slab side' lower receiver (lacking raised boss around magazine release button) and original Colt 20-round box magazine

In 1956, ArmaLite designed a lightweight selective fire rifle for military use and designated it the ArmaLite model 15, or AR-15.[15][16] Due to financial problems and limitations in terms of manpower and production capacity, ArmaLite sold the design and the AR-15 trademark along with the ArmaLite AR-10 to Colt's Manufacturing Company in 1959.[17] In 1964, Colt began selling its own version with an improved semi-automatic design known as the Colt AR-15.[18] After Colt's patents expired in 1977, an active marketplace emerged for other manufacturers to produce and sell their own semi-automatic AR-15 style rifles.[1] Some versions of the AR-15 were classified as "assault weapons" and banned under the Public Safety and Recreational Firearms Use Protection Act in 1994 within the United States. This act expired in 2004.[4][19]

In 2009, the term "modern sporting rifle" was coined by the National Shooting Sports Foundation for its survey that year as a marketing term used by the firearms industry to describe modular semi-automatic rifles including AR-15s.[20][6][21][14] Today, nearly every major firearm manufacturer produces its own generic AR-15 style rifle.[22][21] As Colt continues to own and use the AR-15 trademark for its line of AR-15 variants, other manufacturers must use their own model numbers and names to market their AR-15 style rifles for commercial sale.[23]

Under US law, when manufactured with a barrel length less than 16 inches (410 mm) and without a shoulder stock, it is legally considered a pistol as opposed to being a short-barreled rifle,[24] and is described as an AR-15 style pistol.

Modularity and operating systems[edit]

While most earlier breech-loading rifles had a single receiver housing both the trigger and reloading mechanism, an innovative feature of the AR-15 was modular construction to simplify substitution of parts and avoid need for arsenal facilities for most repairs of malfunctioning military rifles.[25] A distinctive two-part receiver is used by both military and sporting AR-15 style rifles. As civilian ownership of AR-15 style rifles became sufficient to create a market for improvements, numerous manufacturers began producing one or more "improved" modules, assemblies, or parts with features not found on factory rifles, and individuals with average mechanical aptitude can often substitute these pieces for original equipment. Due to the vast assortment of aftermarket parts and accessories available, AR-15 style rifles have also been referred to as "the Swiss Army knife of rifles,"[26] "Barbie Dolls for Guys,"[27][28] or "LEGOs [sic] for adults".[29][30][31] These more or less interchangeable modules are a defining characteristic of AR-15 style rifles.[32]

A stripped lower receiver, one that is lacking the additional parts included in a completed lower receiver, is the only part of an AR-15 style rifle that needs to be transferred through a federally licensed firearms dealer under United States federal law.[33]

The lower receiver is the serial-numbered part legally defined as the firearm under United States law. However, this definition is currently questionable due to several court rulings (or government dismissals to avoid rulings) that the AR-15 lower receiver does not match the legal definition in 27 CFR § 479.11, [34][35][36] though a 2021 case from the Eighth Circuit found otherwise.[37] A completed lower receiver is visually distinguished by the trigger guard ahead of the detachable pistol grip, and behind the magazine well capable of holding detachable magazines. The lower receiver holds the trigger assembly including the hammer, and is the attachment point for the buttstock. The lower receiver is attached to the upper receiver by two removable pins. Disassembly for cleaning or repair of malfunctions requires disengaging these pins from the upper receiver. Removal of the rear take-down pin allows the receiver to be opened by rotation around the forward pivot pin as a hinge.[25]

The upper receiver contains the bolt carrier assembly and is attached to the barrel assembly. Sights will be attached to the upper receiver or the barrel assembly. A handguard usually encloses the barrel and a gas-operated reloading device using burnt powder gas vented from a hole (or port) in the barrel near the forward end of the handguard. The handguard is attached to the upper receiver and may also be attached to the barrel.[25]

The initial design included a tube to vent burnt powder gas back into the bolt carrier assembly where it expands in a variable volume chamber forcing the bolt open to eject the spent cartridge case. A buffer spring in the buttstock then pushes the bolt closed picking up a new cartridge from the magazine. This Stoner bolt and carrier piston system has the disadvantage of venting un-burned smokeless powder residue into the receiver where it may ultimately accumulate in quantities causing malfunctions. Some AR-15 style rifles use an alternative short-stroke gas piston design borrowed from the AR-18, where a metal rod pushes against the bolt carrier, driven by a piston located just behind the barrel gas port. This piston design keeps the rifle cleaner by not exhausting in to the receiver.[38] While both the original Stoner and short-stroke gas piston operating systems produce semi-automatic fire, an alternative un-ported barrel assembly includes a sliding handguard connected to a rod moving the bolt by a pump action and eliminating semi-automatic fire.[39] Some AR15-style rifle models feature redesigned gas systems so the rifle is over-the-beach capable to let it fire safely as quickly as possible after being submerged in water. The initial design's construction did not take that capability in account.[40][41] The original design features a free-floating firing pin. To reduce the risk of slam-firing, some AR15-style rifle models feature a (proprietary) firing pin safety in the bolt. Such firing pin safeties can obstruct the upper to work with standard AR-15 type full height hammers in the fire control group of the lower.[42]

Most rifles eject spent cartridges from the right side of the receiver away from right handed shooters who place the butt against the right shoulder while sighting with the right eye and using a finger of the right hand to pull the trigger.[43] Right-side ejection is a disadvantage for the third of the population whose left eye is dominant,[44] and for the tenth of the population who are left handed,[45] because holding these rifles against their left shoulder for maximum accuracy causes the rifle to eject hot spent cases toward the chest, neck or face of a left handed shooter.[46] When the M16A2 was adopted by the Army in 1986, it incorporated a built-in brass deflector to prevent that happening. Most civilian-legal variants also copy that feature.[47] The modular design of AR-15 style rifles has encouraged several manufacturers to offer specialized parts including leftward ejecting upper receivers for converting right handed AR-15 style rifles for left handed use.[48][49][50]

The AR-15 is nominally chambered in .223/5.56mm NATO, but many variants have been produced in different calibers such as .22-LR, 7.62×39mm, 9×19mm Parabellum[51] and shotgun calibers.[52] Some of these firearms chambered in smaller calibers such as 9mm or .22 utilise the blowback[53] or delayed blowback[54] operating principle instead of a direct impingement/piston based operating system, as insufficient gas pressure or volume is produced by the round to cycle the action, or the simpler blowback system is sufficient and may allow removal of the rear buffer tube and spring. Some rare AR-15-style rifles are also available as bolt action firearms rendering them incapable of semi-automatic fire.[39][55][56] These are most commonly marketed in jurisdictions where ownership of semi-automatic rifles is heavily restricted such as in the United Kingdom.

Some AR-15-style rifles have features limiting use of detachable magazines to comply with state regulations.[57][58] Nearly all versions of the civilian AR-15 have a pistol grip like the military versions, and some have folding or collapsible stocks like the M4 carbine which reduce the overall length of the rifle, however AR-15 style lower receivers that accept a non-pistol-grip are available.[59]

Comparison to military versions[edit]

The semi-automatic civilian AR-15 was introduced by Colt in 1963. The primary distinction between civilian semi-automatic rifles and military assault rifles is select fire. Military models were produced with firing modes, semi-automatic fire and either fully automatic fire mode or burst fire mode, in which the rifle fires several rounds in succession when the trigger is depressed. Most components are interchangeable between semi-auto and select fire rifles including magazines, sights, upper receiver, barrels and accessories.[60][61] The military M4 carbine typically uses a 14.5-inch (37 cm) barrel. Civilian rifles commonly have 16-inch (41 cm) or longer barrels to comply with the National Firearms Act.[62]

To prevent a civilian semi-automatic AR-15 from being readily converted for use with the select fire components, several features were changed. Parts changed include the lower receiver, bolt carrier, hammer, trigger, disconnector, and safety/mode selector. The semi-automatic bolt carrier has a longer lightening slot to prevent the bolt's engagement with an automatic sear. Due to a decrease in mass, the buffer spring is heavier. On the select-fire version, the hammer has an extra spur which interacts with the additional auto-sear that holds it back until the bolt carrier group is fully in battery, when the automatic fire is selected.[63] Using a portion of the select fire parts in a semi-automatic rifle will not enable a select fire option (this requires a registered part with the ATF). Lower receivers that are select-fire are identified by a pinhole above the safety/mode selection switch.[64][65][66][67] As designed by Colt the pins supporting the semi-auto trigger and hammer in the lower receiver are larger than those used in the military rifle to prevent interchangeability between semi-automatic and select-fire components.[68]

Production and sales[edit]

The first version produced for commercial sale by Colt was the SP1 model AR-15 Sporter, in .223 Remington, with a 20-inch (51 cm) barrel and issued with five-round magazines.[18] Initial sales of the Colt AR-15 were slow, primarily due to its fixed sights and carry handle that made scopes difficult to mount and awkward to use.[69] Military development of the compact M4 carbine encouraged production of a 16-inch (41 cm) barreled civilian SP1 carbine with a collapsible buttstock beginning in 1977. These carbines have become popular for police use in confined urban spaces, and the collapsible buttstock compensates for the additional thickness of body armor. The shorter barrel reduced bullet velocity by about five percent, and bullet energy by about ten percent. The shorter barrel required moving the gas port closer to the chamber exposing the self-loading system to higher pressures and temperatures which increase stress on moving parts like the bolt lugs and extractor. Although Colt offered a heavier 20-inch barrel for improved accuracy beginning in 1986, increased barrel weight may impair ergonomic balance; so shorter barrels have dominated recent rifle production.[70]

American Tactical OMNI AR-15 style rifle, (Lower in polymer), 5.56×45mm NATO caliber, with Millett DMS-1 scope and FAB Defense stock and grips

In the 1990s, sales of AR-15 style rifles increased dramatically, partly as a result of the introduction of the flat top upper receiver (M4 variant) which allowed scopes and sighting devices to be easily mounted as well as new features such as free floating hand guards that increased accuracy.[69] While only a handful of companies were manufacturing these rifles in 1994, by the 21st century the number of AR-15 style rifles had more than doubled.[71] From 2000 to 2015, the number of manufacturers of AR-15 style variants and knock-offs increased from 29 to about 500.[72] AR-15 style rifles are now available in a wide range of configurations and calibers from a large number of manufacturers. These configurations range from standard full-sizes rifles with 20-inch (51 cm) barrels, to short carbine-length models with 16-inch (41 cm) barrels, adjustable length stocks and optical sights, to long range target models with 24-inch (61 cm) barrels, bipods and high-powered scopes.[73]

In September 2019, Colt Firearms announced it was discontinuing production of the AR-15 for the consumer market, citing "significant excess manufacturing capacity" across the industry and the company's "high-volume contracts" with military and police forces that were "absorbing all of Colt's manufacturing capacity for rifles."[74] However, in 2020 Colt resumed production of the AR-15, following a surge in demand in the United States consumer market.[75]

Estimates vary as to how many of the rifles are owned in the United States. The National Shooting Sports Foundation has estimated that approximately 5 million to 10 million AR-15 style rifles exist in the U.S. within the broader total of the 300 million firearms owned by Americans.[76]


Many hunters prefer using AR-15 style rifles because of their versatility, accuracy, wide variety of available features, and wide variety of calibers (see below).[77] Collapsible stocks are convenient for hunters who pack their rifles into remote hunting locations or for length of pull adjustments to fit any sized hunter.[78] Construction with lightweight polymers and corrosion-resistant alloys makes these rifles preferred for hunting in moist environments with less concern about rusting or warping wood stocks. Positioning of the AR-15 safety is an improvement over traditional bolt action hunting rifles. Many states require hunters to use reduced-capacity magazines.[79] If a hunter misses with a first shot, the self-loading feature enables rapid follow-up shots against dangerous animals like feral pigs or rapidly moving animals like jackrabbits.[77] Hunters shooting larger game animals often use upper receivers and barrels adapted for larger cartridges or heavier bullets. Several states prohibit the use of .22 caliber cartridges like the .223 Remington on large game.[80][81][82]

Cartridge variations[edit]

Since the upper and lower receivers may be swapped between rifles, forensic firearm examination of bullets and spent cartridges may reveal distinguishing marks from the barrel and upper receiver group without identifying the lower receiver for which legal records may be available.[83] An individual may use several upper receiver groups with the same lower receiver. These upper receiver groups may have differing barrel lengths and sights and may fire different cartridges. A hunter with a single lower receiver might have one upper receiver with a .223 Remington barrel and telescopic sight for varmint hunting in the open country and another upper receiver with a .458 SOCOM barrel and iron sights for big-game hunting in brushy woodland. The dimensions of upper and lower receivers originally designed for the 5.56×45mm NATO cartridge impose an overall length limit and diameter limits when adapting modules for other cartridges included in this list of AR platform cartridges.[84][73] The same magazine in the lower receiver group may hold differing numbers of different cartridges.[38]

Use in crime and mass shootings[edit]

Most firearm-related homicides in the United States involve handguns.[85][86][87] A 2019 Pew Research study found that 4% of US gun deaths were caused by semi-automatic rifles, a category which includes AR-15 style rifles.[88] According to a 2013 analysis by Mayors Against Illegal Guns, 14 out of 93 mass shootings involved high-capacity magazines or assault weapons.[89] Nevertheless, AR-15 style rifles have played a prominent role in many high-profile mass shootings in the United States[90] and have come to be widely characterized as the weapon of choice for perpetrators of these crimes.[91] AR-15s or similar rifles were the primary weapons used in 4 of the 10 deadliest mass shootings in modern American history,[92][93] including the 2012 Sandy Hook Elementary School shooting, the 2017 Las Vegas shooting,[94] the 2017 Sutherland Springs church shooting,[94] and the 2018 Stoneman Douglas High School shooting.[95] Gun expert Dean Hazen and mass murder researcher Pete Blair think that mass shooters' gun choices have less to do with the AR-15's specific characteristics but rather with familiarity and a copycat effect.[96][97]

Following the use of a Colt AR-15 rifle in the Port Arthur massacre, the worst single-person shooting incident in Australian history, the country enacted the National Firearms Agreement in 1996, restricting the private ownership of semi-automatic rifles. (Category D[98]).[99][100][101] As a result of the Christchurch mosque shootings with an AR-15 during Friday Prayer on 15 March 2019, the New Zealand government enacted a law to ban semi-automatic firearms, magazines, and parts that can be used to assemble prohibited firearms.[102][103] After the 2020 Nova Scotia attacks, the deadliest rampage by a single person in Canadian history,[104] Canada banned a class of rifles, including the AR-15.[105][106]

Partial list of models[edit]

See also[edit]


  1. ^ a b c Jeff Zimba (2014). The Evolution of the Black Rifle: 20 Years of Upgrades, Options, and Accessories. Prepper Press. p. 10. ISBN 978-0692317266.
  2. ^ a b Myre, Greg (February 28, 2018). "A Brief History Of The AR-15". National Public Radio. Retrieved November 20, 2021. AR" comes from the name of the gun's original manufacturer, ArmaLite, Inc. The letters stand for ArmaLite Rifle — and not for "assault rifle" or "automatic rifle.
  3. ^ a b Sobieck, Benjamin (2015). The Writer's Guide to Weapons. Penguin. p. 202. ISBN 978-1599638157.
  4. ^ a b Plumer, Brad (2012-12-17). "Everything you need to know about the assault weapons ban, in one post". The Washington Post. ISSN 0190-8286. Archived from the original on 2018-02-24. Retrieved 2018-02-26.
  5. ^ Libresco, Leah (2016-06-14). "Guns Like The AR-15 Were Never Fully Banned". FiveThirtyEight. Retrieved 2018-02-26.
  6. ^ a b Peters, Justin (2016-06-14). "Omar Mateen Had a 'Modern Sporting Rifle'". Slate. ISSN 1091-2339. Archived from the original on 2018-02-16. Retrieved 2018-02-16.
  7. ^ "Modern Sporting Rifle Facts". National Shooting Sports Foundation. 2013. Archived from the original on 1 September 2013. Retrieved 21 August 2013.
  8. ^ Feuer, Alan (13 June 2016). "AR-15 Rifles Are Beloved, Reviled and a Common Element in Mass Shootings". The New York Times. Archived from the original on 17 February 2018. Retrieved 16 February 2018.
  9. ^ Beckstrand, Tom (October 2019), "The Modern Hunter", Guns & Ammo, pp. 42–49
  10. ^ Boyle, John (2014-12-13). "Military-style AR-15 rifles: 'The market is saturated'". USA Today. Retrieved 2019-09-21.
  11. ^ Chip Reid (2012-12-05). "AR-15 gun sales continue to spike after shootings". CBS News. Retrieved 2019-09-21.
  12. ^ "Patent US2951424 - GAS OPERATED BOLT AND CARRIER SYSTEM". Retrieved 2013-04-11.
  13. ^ "ARMALITE TECHNICAL NOTE 54: DIRECT IMPINGEMENT VERSUS PISTON DRIVE" (PDF). Armalite. 3 July 2010. Archived from the original (PDF) on 5 September 2012.
  14. ^ a b "Modern Sporting Rifle – AR-15 platform-based rifles". NSSF. Archived from the original on 2017-12-28. Retrieved 2018-02-16.
  15. ^ "ArmaLite History: 1955–1959". Archived from the original on 22 February 2018. Retrieved 22 February 2018.
  16. ^ Bartocci, Christopher R. (July 16, 2012). "The AR-15/M16: The rifle that was never supposed to be". Gun Digest. Archived from the original on March 10, 2018. Retrieved March 18, 2018.
  17. ^ Bartocci, Christopher R. (July 16, 2012). "AR-15/M16: The Rifle That Was Never Supposed to Be". Gun Digest. Archived from the original on January 11, 2017. Retrieved May 24, 2017.
  18. ^ a b Bob Hutton & Bob Forker (October 1964). "A Beautiful Marriage: .223 Remington and Colt's AR-15 'Sporter'". Guns & Ammo.
  19. ^ Bocetta, Sam (March 15, 2018). "The Complete History of the AR-15 Rifle". Small Wars Journal. Archived from the original on March 18, 2018. Retrieved March 18, 2018.
  20. ^ "Modern Sporting Rifle Owners Are Most Active Shooters, Says NSSF/Responsive Management Survey". National Shooting Sports Foundation. 2010-04-19. Archived from the original on 2010-04-25. Retrieved 2018-02-20.
  21. ^ a b "DPMS Founder and President Retires". The Outdoor Wire Digital Network. 14 December 2009. Archived from the original on 17 November 2013. Retrieved 16 August 2013. Luth's quest to introduce the hunting market to the AR platform was recognized in January 2009 when he was named to the Outdoor Life's OL-25, and later chosen by online voters as the OL-25 "Reader's Choice" recipient. The recent campaign by the NSSF to educate hunters everywhere about the "modern sporting rifle" can be directly attributed to Luth's push to make AR rifles acceptable firearms in the field, the woods and on the range.
  22. ^ Richardson, Reed (July 12, 2016). "American Rifle: A Biography of the AR-15". Talking Points Memo. Archived from the original on March 29, 2017. Retrieved March 28, 2017. Fueled by this “Obama effect” – his reelection in 2012 coincided with the best month for gun sales in decades – every mainline gun manufacturer now sells an AR-15 model.
  23. ^ "AR-15 – Trademark Details". JUSTIA Trademarks. Archived from the original on 28 February 2018. Retrieved 27 February 2018.
  24. ^ Chris Mudgett (16 April 2020). "7 Things You Need to Know Before Buying an AR Pistol". Outdoor Life. Retrieved 25 March 2021.
  25. ^ a b c Colt (January 1980). M16A1 Rifle. Hartford, Connecticut: Colt's Manufacturing Company.
  26. ^ Patrick Sweeney ARS Across the Board Archived 2011-08-19 at the Wayback Machine. Guns & Ammo, November 2010
  27. ^ Levings, Darryl (February 2, 2013). "AR-15 rifle more loved – and hated – than ever. Amid the rising call for the rifle to be banned, sales of the "Barbie doll for guys" have soared". Kansas City Star. Retrieved 10 August 2016.
  28. ^ Kyle, Chris (2014). American Gun. William Morrow Paperbacks. p. 252. ISBN 978-0062242723.
  29. ^ Stokes, Jon. "The AR-15 Is More Than a Gun. It's a Gadget". WIRED. Archived from the original on 2017-02-02. Retrieved 2017-01-30.
  30. ^ "Fifteen of the Best Cheap AR Accessories". The Shooter's Log. 18 April 2015. Archived from the original on 2017-02-02. Retrieved 2017-01-30.
  31. ^ "Lego Kits for Adults". AR Blog. 2016-07-13. Archived from the original on 2017-02-02. Retrieved 2017-01-30.
  32. ^ "Modern Sporting Rifle". National Shooting Sports Foundation. Archived from the original on 28 December 2017. Retrieved 27 February 2018.
  33. ^ "10 Best AR-15 Stripped Lower Receiver for Your Needs [2021 Review]". Archived from the original on 2019-02-22. Retrieved 2019-02-22.
  34. ^ JORDAN MICHAELS, Judge Finds Serious 'Disconnect' in ATF's Classification of AR-15 Lower Receivers as 'Firearms', Guns America LLC
  35. ^ GLOVER, SCOTT (February 7, 2020). "Former ATF agent at center of legal dispute over AR-15". KSL News Radio.
  36. ^ BLEIBERG, JAKE; DAZIO, STEFANIE (January 13, 2020). "Design of AR-15 could derail charges tied to popular rifle". AP News.
  37. ^ "United States v. Burning Breast, No. 20-1450 (8th Cir. 2021)". Justia Law. Retrieved 2021-09-16.
  38. ^ a b Popenker, Maxim (4 September 2012). "Ar-15-type rifles". Modern Firearms. Archived from the original on 26 February 2018. Retrieved 27 February 2018.
  39. ^ a b Horman, B. Gil. "Review: Troy 223 National Sporting Pump-Action Rifle". American Rifleman. Archived from the original on 1 March 2018. Retrieved 27 February 2018.
  40. ^ "The Caracal CAR816: The New Desert Assault Rifle". 2016-09-02. Retrieved 2020-10-10.
  41. ^ "CAR814". 3 October 2017. Retrieved 2 March 2022.
  42. ^ "Meet the Sig Sauer 516 Rifle: The Best AR-15 Around?". 2019-06-30. Retrieved 2020-10-11.
  43. ^ Craige, John Houston The Practical Book of American Guns (1950) Bramhall House pp. 108–14
  44. ^ Chaurasia BD, Mathur BB (1976). "Eyedness". Acta Anat (Basel). 96 (2): 301–05. doi:10.1159/000144681. PMID 970109.
  45. ^ Hardyck C, Petrinovich LF (1977). "Left-handedness". Psychol Bull. 84 (3): 385–404. doi:10.1037/0033-2909.84.3.385. PMID 859955.
  46. ^ Boddington, Craig. "Rifles For Left-Out Lefties". American Rifleman. Archived from the original on 5 March 2018. Retrieved 6 March 2018.
  47. ^ [1]
  48. ^ "Left Hand". Moriarti Armaments. Archived from the original on 9 March 2018. Retrieved 6 March 2018.
  49. ^ "Left Handed Upper Halves". Stag Arms. Archived from the original on 9 March 2018. Retrieved 6 March 2018.
  50. ^ "Left Handed". Black Rain Ordnance. Archived from the original on 9 March 2018. Retrieved 6 March 2018.
  51. ^ "The 30 Best AR-Style Rifles for Hunting and Personal Defense". Field & Stream. 18 September 2019. Retrieved 2020-05-21.
  52. ^ "NEW: Panzer Arms AR-12 Semiautomatic Shotgun". The Firearm Blog. 2017-11-20. Retrieved 2020-05-21.
  53. ^ "Review: Smith & Wesson M&P 15-22 Sport OR with Optic". Retrieved 2020-05-21.
  54. ^ "CMMG Banshee 10mm Mk10 First Look". Handguns. 2019-09-13. Retrieved 2020-05-21.
  55. ^ "SGC Mk V Speedmaster Straight-Pull Rifles Reviews". Gun Mart. Retrieved 2020-05-21.
  56. ^ "ComGraf Pump Action Rifle". Trend Editor. Archived from the original on 2 March 2018. Retrieved 27 February 2018.
  57. ^ "AR-15 COMPMAG". COMPMAG. Archived from the original on 1 March 2018. Retrieved 27 February 2018.
  58. ^ LaPedis, Ron. "How to make your AR great again – in California". PoliceOne. Archived from the original on 1 March 2018. Retrieved 27 February 2018.
  59. ^ "Best Featureless AR-15 Parts & Builds". Firearm Review. 9 April 2019. Retrieved 20 June 2021.
  60. ^ Bartocci, Christopher (July 16, 2012). "AR-15/M16: The Rifle That Was Never Supposed to Be". GunDigest. Gun Digest Media. Archived from the original on March 10, 2018. Retrieved March 6, 2018.
  61. ^ Zimba, Jeff (2014). The Evolution of the Black Rifle. Prepper Press. ISBN 978-0692317266.
  62. ^ Muramatsu, Kevin (2014). Gun Digest Guide to Customizing Your AR-15. F+W Media, Inc. ISBN 978-1440242793.
  63. ^ Hanks, D. A. (2004). Workbench AR-15 Project. Paladin Press. ISBN 1610048466.
  64. ^ "NCJRS Abstract – National Criminal Justice Reference Service". Retrieved 2020-05-02.
  65. ^ "AR-15, CAR-15, M16 User Manual" (PDF). Ugcsurvival. Retrieved 2022-03-02.
  66. ^ "Full Auto Volume One : AR-15 Modification Manual" (PDF). Ugcsurvival. Retrieved 2022-03-02.
  67. ^ Searson, Mike (June 5, 2019). "Turning Your AR-15 into an M-16". Recoil.
  68. ^ Sweeney, Patrick (2016). Gunsmithing the Ar-15, the Bench Manual. F+W Media, Inc. ISBN 978-1440246609.
  69. ^ a b Mann, Richard A. (2014). GunDigest Shooter's Guide to the AR-15. Iola, Wisconsin: Krause Publications. pp. 15–16. ISBN 978-1440238475. Archived from the original on 24 April 2017. Retrieved 30 April 2017.
  70. ^ Knupp, Jeremiah (2019). "This Is My Rifle: The Case For The 20"-Barreled AR-15". American Rifleman. National Rifle Association of America. 167 (3): 41–45 & 70–72.
  71. ^ Sweeney, Patrick (2016). Gunsmithing the AR-15, the Bench Manual. Iola, Wisconsin: F+W Media, Inc. pp. 7–9. ISBN 978-1440246609.
  72. ^ O’Dea, Meghan (June 13, 2016). "What Makes the AR-15 So Appealing to Mass Shooters?". Fortune. Archived from the original on February 23, 2018. Retrieved February 15, 2018. While Colt alone makes the official AR-15, variants and knock-offs are made by a huge number of gun manufactures, including Bushmaster, Les Baer, Remington, Smith & Wesson (swhc, +0.00%), and Sturm & Ruger (rgr, -2.04%), just to name a few. TacticalRetailer claims that from 2000 to 2015 the AR manufacturing sector expanded from 29 AR makers to about 500, “a stunning 1,700% increase.”
  73. ^ a b Evolution of an AR | Gear | Guns & Ammo Archived September 15, 2011, at the Wayback Machine. (August 29, 2011). Retrieved on 2011-09-27.
  74. ^ Jordan Valinsky (September 20, 2019). "Colt will stop making AR-15 rifles for consumers". CNN Business. {{cite web}}: Missing or empty |url= (help)
  75. ^ Chris Eger (June 29, 2020). "Colt Now Shipping AR-15s to Consumers again".
  76. ^ Schoen, John W. (13 June 2016). "Owned by 5 million Americans, AR-15 under renewed fire after Orlando massacre". CNBC. Archived from the original on 17 March 2018. Retrieved 17 March 2018.
  77. ^ a b Drabold, Will. "Here Are 7 Animals Hunters Kill Using an AR-15". Time. Archived from the original on 22 April 2018. Retrieved 22 May 2018. In interviews with TIME, leaders of 15 state shooting groups said semiautomatic rifles are popular with hunters in their states. Hunters say they favor the gun for its versatility, accuracy and customizable features for shooting animals. The semiautomatic feature, which allows these guns to shoot up to 45 rounds a minute, is not always necessary, but useful in some situations, hunters say.
  78. ^ Billings, Jacki. "Why hunters are trading in traditional hunting rifles for the AR-15". Archived from the original on 20 May 2018. Retrieved 22 May 2018.
  79. ^ Metcalf, Dick (30 April 2012). "The AR for Deer Hunting?". North American Whitetail. Archived from the original on 24 April 2018. Retrieved 24 May 2018.
  80. ^ "Legal Hunting Weapons for Game Mammals". Oregon Hunting Regulations. J.F. Griffin Publishing. Archived from the original on 3 August 2018. Retrieved 26 July 2018.
  81. ^ "Legal Firearms for Hunting Big Game or Trophy Game Animals". Wyoming Hunter Ed Course. Kalkomey Enterprises LLC. Archived from the original on 3 August 2018. Retrieved 26 July 2018.
  82. ^ "Legal Use of Firearms and Archery Tackle". General Information & Hunting Regulations. Virginia Department of Game & Inland Fisheries. Archived from the original on 3 August 2018. Retrieved 26 July 2018.
  83. ^ Davis, Ann L. "How can a bullet be traced to a particular gun?". Scientific American. Archived from the original on 1 March 2018. Retrieved 27 February 2018.
  84. ^ U.S. Military Small Arms Ammunition Failures and Solutions, GK Roberts, NDIA Dallas, TX, May 21, 2008 "Archived copy" (PDF). Archived from the original (PDF) on 2011-06-28. Retrieved 2011-02-04.{{cite web}}: CS1 maint: archived copy as title (link)
  85. ^ "In Many U.S. States, 18 Is Old Enough to Buy a Semiautomatic". CBS News. The Associated Press. February 16, 2018. Archived from the original on February 20, 2018. Retrieved February 19, 2018. On average, more than 13,000 people are killed each year in the United States by guns, and most of those incidents involve handguns while a tiny fraction involve an AR-style firearm. Still, the AR plays an oversized role in many of the most high-profile shootings...
  86. ^ "Expanded Homicide Data Table 4". 2016 Crime in the United States. Federal Bureau of Investigation. Retrieved 2018-02-26.[permanent dead link]
  87. ^ Balko, Radley (2013). Rise of the Warrior Cop: The Militarization of America's Police Forces. PublicAffairs. ISBN 978-1610392129.
  88. ^ "What the data says about gun deaths in the U.S." Pew Research Center. Retrieved 2021-05-31.
  89. ^ Todd, Michael (December 23, 2013). "The Simple Facts About Mass Shootings Aren't Simple at All". Pacific Standard. Archived from the original on August 23, 2018. Retrieved August 21, 2018.
  90. ^ Lisa Marie Pane And Brendan Farrington, Associated Press (2018-02-15). "Florida shooting revives debate over gun age requirement - Business Insider". Retrieved 2020-05-02.
  91. ^ Jansen, Bart; Cummings, William (November 6, 2017), "Why mass shooters are increasingly using AR-15s", USA Today, archived from the original on February 15, 2018, retrieved February 15, 2018, AR-15 style rifles have been the weapon of choice in many recent mass shootings, including the Texas church shooting Sunday, the Las Vegas concert last month and the Orlando nightclub last year.
    Oppel Jr., Richard A. (February 15, 2018), "In Florida, an AR-15 Is Easier to Buy Than a Handgun", The New York Times, archived from the original on February 15, 2018, retrieved February 15, 2018, The N.R.A. calls the AR-15 the most popular rifle in America. The carnage in Florida on Wednesday that left at least 17 dead seemed to confirm that the rifle and its variants have also become the weapons of choice for mass killers.
    Lloyd, Whitney (February 16, 2018), Why AR-15-style rifles are popular among mass shooters, ABC News, archived from the original on March 2, 2018, retrieved March 2, 2018, AR-15-style rifles have become something of a weapon of choice for mass shooters.
  92. ^ The LA Times identified five shootings including the Pulse Nightclub Shooting. Early reports on that shooting identified the rifle as an AR-15. Later reports noted that the rifle was a SIG MCX Howerton, Jason (June 14, 2016). "The gun the Orlando shooter used wasn't actually an AR-15". Business Insider. Archived from the original on October 6, 2018. Retrieved October 6, 2018., Gibbons-Neff, Thomas (June 14, 2016). "The gun the Orlando shooter used was a Sig Sauer MCX, not an AR-15. That doesn't change much". The Washington Post. Archived from the original on January 31, 2019. Retrieved October 6, 2018.
  93. ^ Pearce, Matt (14 February 2018). "Mass shootings are getting deadlier. And the latest ones all have something new in common: The AR-15". Los Angeles Times. Archived from the original on 10 May 2018. Retrieved 11 May 2018. in all of the latest incidents...the attackers primarily used AR-15 semiautomatic rifles.
  94. ^ a b "Why the AR-15 keeps appearing at America's deadliest mass shootings". USA Today. Archived from the original on 25 February 2018. Retrieved 22 February 2018.
  95. ^ Shapiro, Emily (February 14, 2018). "At least 17 dead in 'horrific' Florida school shooting, suspect had 'countless magazines'". ABC News. Archived from the original on February 15, 2018. Retrieved February 15, 2018.
  96. ^ Cummings, William (February 15, 2018). "Why the AR-15 keeps appearing at America's deadliest mass shootings". USA Today. Archived from the original on June 12, 2018. Retrieved June 1, 2018.
  97. ^ Lloyd, Whitney (February 16, 2018). "Why AR-15-style rifles are popular among mass shooters". ABC News. Archived from the original on June 12, 2018. Retrieved June 6, 2018.
  98. ^ Oakes, Dan (2013-01-23). "Assault guns made here". The Sydney Morning Herald. Archived from the original on 2018-02-27. Retrieved 2018-02-26.
  99. ^ "Firearms in Australia: a guide to electronic resources". Commonwealth of Australia. 9 August 2007. Archived from the original on 5 March 2015. Retrieved 4 April 2015.
  100. ^ "How Australia Passed Gun Control: The Port Arthur Massacre and Beyond". Foreign Affairs. 13 October 2017. Archived from the original on 20 February 2018. Retrieved 18 February 2018.
  101. ^ Wahlquist, Calla (14 March 2016). "It took one massacre: how Australia embraced gun control after Port Arthur". The Guardian. Archived from the original on 22 February 2018. Retrieved 20 February 2018.
  102. ^ "New Zealand initiates bill to ban guns used in mosque attack". PBS News Hour. PBS. 1 April 2019. Retrieved 29 April 2019.
  103. ^ Kate King10 Apr 2019 11:40 GMT (2019-04-10). "New Zealand passes gun law reform in wake of Christchurch attack | New Zealand News". Al Jazeera. Retrieved 2020-05-02.
  104. ^ "Nova Scotia mass killings: What we know and what we don't know". CBC News. April 19, 2020. Retrieved April 19, 2020. The suspect used his gun during the rampage, but may have used 'other methods' as well, said RCMP Chief Supt. Chris Leather.
  105. ^ "Canada Bans Assault-Style Weapons After Shooting Rampage". Associated Press. May 1, 2020. Retrieved May 2, 2020.
  106. ^ Ballingall, Alex (2020-05-01). "Ottawa will let gun owners keep 'military-style' firearms despite nationwide ban". The Star. Retrieved 2020-05-02.

Further reading[edit]

  • Stevens, R. Blake and Edward C. Ezell (1994). The Black Rifle M16 Retrospective. Ontario, Canada: Collector Grade Publications. ISBN 0889351155
  • Bartocci, Christopher R. (2004). Black Rifle II The M16 Into the 21st Century. Ontario, Canada: Collector Grade Publications. ISBN 0889353484