Smith Wesson M&P 5 7 5 7X28MM 5 IN Threaded Optic Ready

About this product

Smith & Wesson's M&P 5.7 brings the company's mainstream M&P ergonomics and controls to the 5.7x28mm cartridge, a high-velocity, low-recoil round originally developed for the FN Five-seveN and FN P90. This listing is the base black configuration at $699, with a threaded barrel and optics-ready slide included from the factory.

Why does 5.7x28mm appeal to shooters looking at this pistol?

The 5.7x28mm cartridge fires a small, high-velocity bullet that produces noticeably less felt recoil than most defensive 9mm loads, while still carrying enough energy for personal defense — a combination that makes it popular with shooters who are recoil-sensitive or who want faster, more controllable follow-up shots. The tradeoff is that 5.7x28mm ammunition has historically cost more per round and been less universally stocked than 9mm, though its availability has grown substantially since Smith & Wesson, Ruger, and others entered the pistol category with more affordable options.

What does the M&P 5.7's "Tempo" barrel system actually solve?

The 5.7x28mm cartridge's bottlenecked case shape and high pressure create extraction and cycling challenges that a standard blowback or simple locked-breech pistol handles less reliably than it would with a straight-walled pistol cartridge. Smith & Wesson's Tempo barrel system is a proprietary lock-breech, two-part barrel with its own gas system specifically engineered to extract and cycle the 5.7x28mm case reliably — a meaningful engineering investment rather than simply chambering an existing 9mm-pattern pistol for a different round.

What are the barrel and capacity specs?

This model runs a 5-inch stainless steel barrel with 1/2x28 threading for a suppressor or muzzle device, front slide serrations and lightening cuts, and a 1:9-inch twist rate. Magazine capacity is a genuinely high 22+1 rounds, and the pistol weighs 26.7 ounces — heavier than most compact 9mm carry pistols, reflecting its role more as a range/home-defense pistol than a deep-concealment carry gun.

What controls and sight setup does it use?

The M&P 5.7 ships with three-dot white sights and a slide cut for a red dot optic, along with fully ambidextrous controls and a reversible magazine release — consistent with Smith & Wesson's broader M&P design philosophy of accommodating both right- and left-handed shooters without compromise on either side of the gun.

What should California buyers confirm?

Confirm current California handgun roster status for the M&P 5.7 with your FFL before ordering, along with whether 10-round-compliant magazines are available for this configuration, since the standard 22+1 magazines exceed California's capacity limit. As a firearm, it transfers through your chosen licensed FFL dealer rather than shipping to your home.

Is 5.7x28mm ammunition easy to find?

Availability has improved substantially since Smith & Wesson and other major manufacturers entered the 5.7x28mm pistol market, but it's still nowhere near as universally stocked as 9mm at a typical sporting goods store or big-box retailer. Buyers new to the cartridge should check ammunition availability and pricing in their area, or plan to buy in bulk online, before committing to this platform as a primary range or carry gun — running out of a harder-to-find caliber mid-session is a more common frustration with 5.7x28mm than with 9mm, especially at smaller local gun shops that may only stock one or two boxes at a time rather than a full shelf, so many owners end up ordering ammunition online in bulk instead of relying on walk-in availability at a local counter.