<p>The Smith &amp; Wesson® M&amp;P® 5.7 Optics-Ready Threaded Barrel Semi-Auto Pistol without Thumb Safety applies the proven M&amp;P formula to a handgun chambered in the high-velocity 5.7x28mm round. To deal with the unique properties of the 5.7x28mm round, Smith &amp; Wesson developed the internal hammer-fired, gas-operated TEMPO® barrel system. It's a gas-operated, delayed-blowback system that uses a rotating inner barrel and outer barrel sleeve to manage recoil and enhance reliability with a wider range of 5.7 loads. The TEMPO system ensures that the bullet passes the gas port before the barrel unlocks, allowing for consistent extraction with less felt recoil. The M&amp;P 5.7 comes standard with a flat-faced trigger with crisp single-action break. Other features include an optics-ready slide, 5 threaded barrel, FDE polymer frame, ambidextrous slide stop, and reversible mag release. No manual safety. Includes 2 magazines.</p> <ul> <li class=>M&amp;P chambered in 5.7x28mm</li> <li class=>TEMPO 2-piece barrel system to manage recoil and enhance reliability</li> <li class=>Gas-operated, internal hammer-fired, delayed-blowback action</li> <li class=>5 threaded barrel</li> <li class=>Flat-faced trigger with crisp single-action break</li> <li class=>Optics-ready slide</li> <li class=>FDE polymer frame with enhanced texturing</li> <li class=>Ambidextrous slide stop and reversible mag release</li> <li class=>No manual safety</li> </ul>