The M18 is the U.S. military's compact sidearm, the shorter companion to the M17 that won the Modular Handgun System contract, and SIG sells the same pistol to civilians. It runs the P320 serialized fire control unit, a 3.9-inch barrel, and the coyote tan finish that identifies the military variants.

This CSS version is the reduced-capacity configuration built to meet Massachusetts requirements. Whatever the configuration, it is the same striker-fired 9mm carried by American servicemembers, with the durability testing that contract required behind it.

This firearm ships to your chosen FFL dealer for transfer. Order online from Dawson Defense, an Arizona-owned licensed dealer and importer.