SIG Sauer's MCX Rattler is the most compact expression of the MCX platform, and this LT version chambered in .300 Blackout with a 9-inch barrel is the configuration the cartridge was designed for. The .300 Blackout was engineered specifically to deliver full performance from short barrels — unlike 5.56, it loses very little in a 9-inch tube, and it runs subsonic loads through a suppressor exceptionally well. The MCX's short-stroke gas piston system and folding-capable design make this about as small as a serious rifle-caliber weapon gets. FDE finish.

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