Smith & Wesson M&P15-22
|Smith & Wesson M&P15-22|
Smith & Wesson M&P15-22
|Place of origin||United States|
|Designer||Smith & Wesson|
|Manufacturer||Smith & Wesson|
|Unit cost||$449-709 (MSRP)|
|Weight||5.5 lbs / 2.4948 kg|
|Length||33.75" Extended, 30.5" Collapsed|
|Barrel length||16" / 40.6 cm|
|Cartridge||.22 Long Rifle|
|Feed system||10 or 25-round detachable box magazine|
The Smith & Wesson M&P15-22 is a .22 LR variant of the Smith & Wesson M&P15. It is blowback-operated, rather than direct impingement-operated and is intended for recreational shooting ("plinking") and small game hunting. It is made with a polymer upper and lower receiver, rather than the aluminum that is normally used in AR-15s and uses proprietary polymer magazines.
It was designed to be a less expensive alternative for training with an AR-15 style rifle, as the rifle itself is much less expensive than most AR-15s, and the ammunition is often much less expensive than the .223 Remington/5.56×45mm NATO. The rifle features a safety and bolt lock that operate just like an AR-15's. The M&P15-22 can also be an alternative in jurisdictions that restrict magazine capacity for centerfire cartridges.
The M&P15-22's lower recoil is used as a way to ease new shooters into the sport, allowing them to familiarize themselves with AR-15 controls without the fear of excessive recoil or noise. The disassembly process is very similar to the AR-15 and S&W M&P 15. The lower receiver detaches from the upper with two captured pins. The lower receiver contains a standard M&P15 trigger assembly that is compatible with most AR-15 trigger groups. The upper receiver contains the bolt, barrel, and charging handle.
Smith & Wesson offers the M&P 15/22 in a variety of finishes including Kryptek Highlander and Muddy Girl in addition to basic black or tan. 
In 2016, Project Appleseed temporarily banned use of S&W MP15-22 rifles at their shooting clinics following a series of out-of-battery discharges, pending a full investigation and correction from Smith & Wesson. This was based on several incidents that occurred in multiple states, including one that injured a shooter on the line and another where multiple cartridges fired with but one trigger pull.
- ""An AR Plinking Good Time: Smith & Wesson's M&P 15-22 Rifle." By Paul Rackley. American Rifleman". Retrieved 15 November 2014.
- "Main product page". Retrieved 15 November 2014.
- "Product page". Retrieved 15 November 2014.
- Richard A. Mann (30 April 2014). GunDigest Shooter's Guide to the AR-15. Iola, Wisconsin: Krause Publications. pp. 203–204. ISBN 978-1-4402-3847-5.
- Kevin Muramatsu (11 November 2011). Gun Digest Smith & Wesson M&P 15-22 Assembly/Disassembly Instructions. Iola, Wisconsin: Gun Digest Books. pp. 7–8. ISBN 1-4402-3167-2.
- Robert A. Sadowski (21 November 2012). Shooter's Bible Guide to Firearms Assembly, Disassembly, and Cleaning. Skyhorse Publishing Company, Incorporated. pp. 306–307. ISBN 978-1-61608-875-0.
- Hart, David (24 February 2016). "2016 New Rimfires and Airguns". Gun Digest.
- OutdoorHub Reporters. "Smith & Wesson 15/22 Banned from All Appleseed Events After Accidents". OutdoorHub. Retrieved 18 September 2016.
- Duprey, Rich (24 September 2016). "Smith & Wesson's Most Popular Rifle Has a Big Problem". The Motley Fool.