Bushmaster M4-type Carbine

From Wikipedia, the free encyclopedia
(Redirected from Bushmaster M4 Type Carbine)
Bushmaster M4-type carbine
Czech Bushmaster M4A3 BMAS
TypeAssault rifle
Semi-automatic carbine (M4gery)
Place of originUnited States
Service history
WarsWar in Afghanistan (2001–2021)[1]
War in Iraq (2003-2011)
Production history
ManufacturerBushmaster Firearms International
Mass2.82 kg (6.22 lb)
Length882.7 mm (34.75 in)
Barrel length406.4 mm (16 in)

Cartridge.223 Remington
5.56×45mm NATO
6.8mm Remington SPC
ActionGas-operated, rotating bolt
Rate of fire700–950 round/min (fully automatic)
Effective firing range300 m
Feed systemSTANAG magazines
SightsIron sights

The Bushmaster M4 or M4A3 is a semi-automatic or select-fire carbine manufactured by Bushmaster Firearms International, modeled on the AR-15. It is one of the Bushmaster XM15 line of rifles and carbines.


The M4 Type Carbine is a copy of the Colt M4 carbine. The semi-automatic version is marketed to the U.S. civilian market in compliance with the National Firearms Act. A select fire variant can be ordered by military or law enforcement organizations with three-round burst or fully automatic capability.[2]

The rifle's caliber is .223 Remington/5.56×45mm NATO, and the barrel is hard chrome lined in both the bore and chamber. Unlike the current Colt M4 Carbine which features a four-position telescopic stock, the Bushmaster has a six-position stock. It is compatible with most standard AR-15 parts and has the ability to accept all AR-15/M16 type STANAG magazines.

The standard M4 Type Carbine features a permanently fixed "Izzy" flash suppressor attached to a 14.5 in (370 mm) barrel, which brings the barrel to a total length of 16 in (410 mm). Bushmaster also produces the Patrolman's Carbine variant which features the more common removable "bird cage" flash suppressor, attached to a 16 in (410 mm) barrel, bringing the total barrel length to 17.5 in (440 mm). Both of these comply with current U.S. federal law which states a minimum 16 in (410 mm) barrel for a rifle. There is also a military M4 Type Carbine which comes with a 14.5 in (370 mm) barrel and a removable "bird cage" flash suppressor.[2]

An M4 Type Post-Ban Carbine was developed for the 1994 United States Federal Assault Weapons Ban requirements. Since the ban expired in 2004, this rifle has essentially been replaced by the M4A2 and M4A3. Some states in the U.S. have kept these laws, so the rifle is still being produced.

Legal issues[edit]

A trademark dispute between Bushmaster and Colt concerned the use of the "M4" name. The M4 was developed and produced for the United States government by Colt, which had an exclusive contract to produce the M4 family of weapons until 2009.[3] Several other manufacturers, including Bushmaster, offer M4-like firearms, nicknamed "M4geries." Colt previously held a U.S. trademark on the term "M4."[4]

In April 2004, Colt filed a lawsuit against Bushmaster and Heckler & Koch, claiming acts of trademark infringement, trade dress infringement, trademark dilution, false designation of origin, false advertising, patent infringement, unfair competition, and deceptive trade practices. Heckler & Koch later settled out of court. On December 8, 2005, a District court judge in Maine granted a summary judgment in favor of Bushmaster Firearms, dismissing all of Colt's claims except for false advertising. On the latter claim, Colt could not recover monetary damages. The court also ruled that "M4" was now a generic name, and that Colt's trademark should be revoked.[5]


A map with users of the Bushmaster M4 in blue



  • Neville, Leigh (2017). European Counter-Terrorist Units. Osprey. ISBN 978-1472825278.
  • Neville, Leigh (2019). The Elite: The A–Z of Modern Special Operations Forces. Oxford: Osprey Publishing. ISBN 978-1472824295.


  1. ^ Vining, Miles (22 April 2016). "ISAF armament of BLS". Archived from the original on 20 August 2018. Retrieved 14 September 2018.
  2. ^ a b "Bushmaster military models - Bushmaster M4 A2/A3 Type Carbines". Bushmaster Firearms International. 2007. Retrieved 2007-09-06.[dead link]
  3. ^ Terrill, Daniel (12 August 2015). "Remington sues gov't over Army's contract with FN, Colt". guns.com. Retrieved 14 April 2016.
  4. ^ US Trademark serial number 76335060 registration number 2734001
  5. ^ "OpenJurist synopsis of denial of Colt's appeal to 08 Dec 2005 ruling". Openjurist.org. Retrieved 2010-08-30.
  6. ^ "Archived copy" (PDF). Archived (PDF) from the original on 2012-02-29. Retrieved 2014-12-09.{{cite web}}: CS1 maint: archived copy as title (link)
  7. ^ "601st Special Forces Group Official Website". 601skss.cz. Retrieved 2015-09-26.
  8. ^ "Georgian Army". Georgian Army. Archived from the original on 2012-03-09. Retrieved 2007-06-25.
  9. ^ Neville 2017, p. 57.
  10. ^ Neville 2019, p. 46.
  11. ^ Royal Malaysian Customs Academy (2010). "Royal Malaysian Customs Academy: Firing range". Royal Malaysian Customs. Archived from the original on 2019-07-06. Retrieved 2016-03-20.
  12. ^ "Replacement due for police rifles". New Zealand Police. 2005-05-19. Archived from the original on 2007-11-01. Retrieved 2007-06-25.
  13. ^ C, Luke (26 February 2021). "Cambridge Police Commissioner makes Plans to Reduce Gun Inventory". The Firearm Blog. Archived from the original on 2021-02-27.
  14. ^ Jane's Guns Recognition Guide. Hogg, Ian. 12 November 2002. ISBN 000712760X.

External links[edit]