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The Smith & Wesson M&P15-22 is a .22 LR variant of the Smith & Wesson M&P15. In contrast to the original AR-15, it is blowback-operated, rather than direct impingement-operated. It is intended for recreational shooting ("plinking") and hunting. It is made with a polymer upper and lower receiver, rather than the aluminum that is normally used in AR-15s. Its proprietary magazines are also polymer. The handguards are also polymer, and feature quadruple Picatinny rails.
The M&P15-22 can be used as 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 is also offered in a MOE (Magpul Original Equipment) version complete with an MOE pistol grip, MOE stock, MBUS sights, and a threaded barrel. This is available in Magpul FDE (Field Dark Earth), and standard black. The M&P15-22's lower recoil may also be 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 15-22 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.
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.

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  1. CountryGent

    S&W M&P 15-22 Warning

    I received a card, with a small metal gauge, in the mail on our FFL post office box about the S&W M&P 15-22. I don't own one, nor, to the best of my recollection, ever transferred one through our business. (The only S&Ws I recall were handguns.) Anyway, I just thought I'd pass this along in...
  2. ilikegunspdx

    Fostech sport binary trigger in S&W 15-22

    FYI for those of you thinking about buying the $269 Fostech echo sport trigger for the 15-22. If you install as shown in the instructions it will not work because the 15-22 upper (or more specifically the bolt I guess) doesn’t push the trigger lock forward. It won’t fire unless the trigger...
  3. RaceFan

    S&W M&P15-22 Consumer Alert

    Smith & Wesson posted this yesterday. Details at the link below. M&P15-22 Consumer Safety Alert | Smith & Wesson
  4. HotRodGuy

    M&P 15-22 extractor failure.

    Ill start by saying that S&W was very quick to get me squared away with a shipping label to get it back for repair. Less than 100 rounds through the new 15-22 and had a bunch of FTEs and stovepipes along with ejections ranging between flopping out of the port to 6". Finally, the extractor...
  5. HotRodGuy

    M&P 15-22 red dot experience?

    Does anyone have experience with the red/green dot that S&W included with the M&P 15-22 optics ready package currently available (PSA, TT)? Wondering if I will keep it, or sell it and mount my Prostaff Rimfire. Rifle will be here next week.
  6. Joe Link

    Best cheap red dot for Smith & Wesson 15-22?

    I'm looking for a cheap red dot for my Smith & Wesson 15-22 that still has some semblance of quality. I've heard good things about the Bushnell TRS-25 but I wanted other opinions as well.
  7. Rudedog

    Smith &Wesson M&P 15-22

    I have one of these and so far all I have done with it is to install an EOtech sight and bought some spare magazines. Has anyone tricked one out? I would like to add a ambidextrous safety or just reverse the stock one. I have some Magpul mlok sections so I can attach a sling. Probably a cheap...
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