Description
The 5.7x28mm crowd got a lot more interesting when Smith & Wesson jumped in, and the M&P 5.7 is not just another polymer pistol with a new chambering slapped on. At its core is the TEMPO barrel system, a gas-operated, locked-breech design with a rotating barrel that stays locked until the bullet passes the gas port. That matters with a high-pressure bottleneck round like the 5.7, and the payoff at the range is a pistol that cycles smooth, stays flat, and lets you stack fast follow-up shots without fighting muzzle rise. The internal hammer-fired action drives a flat-face single-action trigger that breaks clean, and it is one of the better factory triggers Smith has put in an M&P.
What the M&P 5.7 Brings to the Table
Capacity is the headline here: 22+1 on board, and this model ships with two 22-round magazines. The 5 inch barrel comes threaded 1/2×28 with a thread protector installed, so a suppressor or muzzle device is a simple swap, and the 1:9 twist wrings good accuracy out of the speedy little cartridge. The slide is cut for optics right from the factory, wears forward and rear serrations, and carries driftable white dot sights in the meantime. A frame-mounted Picatinny rail up front handles lights and lasers. This version also includes an ambidextrous manual thumb safety along with an ambi slide stop and reversible magazine release, so lefties are covered.
Living With the M&P 5.7 Day to Day
Despite the full-size footprint, the grip is surprisingly slim for a double-stack, and at 26.7 ounces unloaded the whole package stays light in the hand. Stainless steel slide and barrel components wear a black Armornite finish that shrugs off wear and moisture. Takedown is simple, no trigger pull required, and you do not even need to pull the thread protector to strip it. Whether you want a soft-shooting home defense pistol, a suppressor host, or just one of the most entertaining range guns going, this one earns its spot in the safe.
Key Specifications
- Manufacturer Part Number: 13347
- UPC: 022188891218
- Caliber: 5.7x28mm
- Action: Internal Hammer-Fired, Gas-Operated TEMPO Barrel System
- Capacity: 22+1
- Barrel Length: 5 in, Threaded 1/2×28 TPI
- Twist Rate: 1:9
- Overall Length: 8.5 in
- Weight: 26.7 oz
- Frame: Polymer
- Slide: Stainless Steel, Optic Ready, Black Armornite Finish
- Sights: Driftable White Dot
- Safety: Manual Thumb Safety, Ambidextrous Slide Stop
- Rail: Picatinny Style
- Made In: USA (Springfield, MA)
What’s Included
- Smith & Wesson M&P 5.7 pistol
- Two 22-round magazines
- Thread protector (installed)
- Owner's manual
Frequently Asked Questions
What makes the TEMPO barrel system on the M&P 5.7 different from other pistols?
Most M&P pistols use a traditional Browning tilt-barrel action, but the M&P 5.7 uses a gas-operated, locked-breech system with a rotating barrel that does not cam open until the bullet passes the gas port. This handles the high pressure of the 5.7x28mm round safely while directing recoil straight back instead of tilting the barrel. The result is a noticeably flat-shooting pistol with very light felt recoil.
Can I run a suppressor on the Smith & Wesson M&P 5.7?
Yes, the 5 inch barrel comes threaded with a standard 1/2×28 pattern and a thread protector installed from the factory. Several ammo makers offer subsonic 5.7x28mm loads for quiet suppressed shooting. Keep in mind that some subsonic loads may need a suppressor attached to cycle the action reliably, which is common for gas-operated pistols in this caliber.
What optics fit the M&P 5.7 slide?
The slide is cut for micro red dot optics right from the factory, so you can mount a compatible reflex sight without sending the slide off for machining. The included driftable white dot sights work fine on their own if you prefer irons. A red dot pairs really well with the flat-shooting nature of the 5.7 cartridge and makes the most of the long sight radius.
Does the M&P 5.7 have a manual safety?
This model, MPN 13347, includes a frame-mounted manual thumb safety along with an ambidextrous slide stop and a reversible magazine release. Smith & Wesson also builds in a trigger safety and internal firing pin block. If you prefer no external safety, S&W makes a separate version of the M&P 5.7 without one.




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