Description
The M&P 15-22 has been one of the most popular rimfire platforms around for years, and this pistol version might be the most fun way to run it. Smith & Wesson built the 15-22 from the ground up as a dedicated .22 LR, not a conversion kit bolted onto a centerfire gun, so the blowback action is tuned for rimfire and it runs the way a 22 should. You get the same control layout as a standard AR too, with a functioning charging handle, bolt catch, shell deflector, and a receiver-mounted two-position safety. That makes it a genuinely useful trainer, since every rep you put in here carries straight over to your 5.56 rig for a fraction of the ammo cost.
Built Around the SBA3 Brace
The SB Tactical SBA3 is the brace most folks ask for by name, and it comes standard here. It adjusts across five positions on a mil-spec style extension, includes a QD sling swivel socket for a one-point sling, and lets the overall length run from 22.8 to 25.4 inches. Up front, the slim M&P handguard carries Magpul M-LOK slots for lights and accessories, and the full-length Picatinny top rail is ready for a red dot or flip-up sights. It ships without irons, so plan on adding an optic. A budget red dot turns this thing into a tack driver at plinking distances.
Suppressor Ready Out of the Box
The 8-inch carbon steel barrel wears a birdcage flash hider over standard 1/2×28 threads, so spinning on a rimfire can takes about ten seconds. A suppressed 15-22 shooting subsonics is one of the quietest, most enjoyable range setups you can put together, and it is a fantastic way to introduce new or recoil-sensitive folks to the sport.
Why the M&P 15-22 Pistol Earns Its Keep
Polymer upper and lower receivers keep the whole package light at around 53.6 ounces, the included 25-round magazine keeps the fun going between reloads, and Smith & Wesson backs it with their lifetime service policy. Cheap to feed, easy to handle, and built in Springfield, Massachusetts, it is the kind of gun that ends up being the first one grabbed for every range trip.
Key Specifications
- Manufacturer: Smith & Wesson
- Model: M&P 15-22 Pistol
- MPN: 13321
- UPC: 022188885033
- Caliber: .22 LR
- Action: Semi-Auto Blowback
- Capacity: 25+1
- Barrel Length: 8 in, carbon steel, threaded 1/2×28
- Twist Rate: 1:15
- Muzzle Device: Birdcage-style flash suppressor
- Brace: SB Tactical SBA3 adjustable with QD sling socket
- Handguard: M&P slim handguard with Magpul M-LOK slots
- Sights: None, full-length Picatinny rail (optic ready)
- Overall Length: 22.8 to 25.4 in
- Weight: 53.6 oz
- Finish: Matte Black
What’s Included
- Smith & Wesson M&P 15-22 Pistol with SBA3 brace
- One 25-round magazine
- Owner's manual
- Cable lock
Frequently Asked Questions
Does the M&P 15-22 Pistol come with sights?
No, it ships without iron sights. The flat-top receiver and full-length Picatinny rail are ready for whatever you want to run, and most owners mount a compact red dot. AR-height flip-up sights are another popular route since the rail sits at standard AR spec.
Is the barrel threaded for a suppressor?
Yes. The 8-inch carbon steel barrel is threaded 1/2×28 and comes with a birdcage flash hider installed. Remove the flash hider and just about any standard rimfire suppressor threads right on, and this platform is a favorite host for running quiet with subsonic ammo.
Will the M&P 15-22 Pistol run cheap bulk .22 LR ammo?
It handles most quality bulk ammo well, though like any semi-auto rimfire it favors high-velocity loads such as CCI Mini-Mags or Federal AutoMatch for the most consistent cycling. Standard velocity and subsonics generally run fine too, especially suppressed. Keeping the bolt and chamber reasonably clean goes a long way, since .22 LR is dirty stuff by nature.
Do standard AR-15 parts and magazines work with this gun?
Magazines are proprietary to the 15-22 series, so AR-15 mags will not work, but extra 25-round 15-22 magazines are widely available. Many accessories do cross over though, including AR grips, most M-LOK and Picatinny-mounted gear, and optics, since the controls and rail layout mirror a standard AR platform.




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