Sig Sauer M17, Semi-automatic, Striker Fired, Polymer Frame Pistol, Full Size, 9MM, 4.7 Barrel, PVD Finish, Coyote, Optics Ready, SIGLITE Night Sights, Manual Safety, 10 Rounds, 3 Magazines, Massachusetts Compliant M17-9-CSS-MS-MA After one of the most rigorous and highly competitive review processes in the history of military firearms, the SIG SAUER M17 was awarded the Modular Handgun System (MHS) contract for the U.S. Army. The M17 is a P320-based platform, and was selected for its uniquely innovative modularity, uncompromising performance, and unmatched capability.