The Sig Sauer P320 Full Size is a full-size striker-fired 9mm built for duty and range use. Sig lists it as a current production pistol, and the registered part of it is the stainless steel fire control unit inside the grip, which means the polymer that shapes the gun is a component a buyer can change.

Two 17-round steel magazines ship with the pistol. The grip module is a full-size medium in black polymer with an M1913 rail under the dust cover, which takes any common weapon light. The trigger is the plain curved P320 unit. The 4.7-inch barrel is carbon steel and the muzzle is not threaded, so a suppressor means a replacement barrel, and this version has no manual safety.

If you're cross-shopping, the Smith & Wesson M&P 9 M2.0 Full Size OR has an MSRP of $699, matches the count at 29.0 oz, 0.7 oz heavier, and ships with seven optic mounting plates, where the Sig mounts a dot on a single footprint. The Glock G17 Gen5 MOS carries the same count on a 4.49-inch barrel at 7.95 inches overall against the Sig's 8.0, and it has interchangeable backstraps where the Sig changes hand fit by changing the whole module.