The SIG SAUER M400 Pro SBR packs SIG's duty-grade AR platform into an NFA-registered short-barreled rifle built for close-quarters agility. The 11.5-inch barrel in 5.56 NATO is a proven configuration — compact enough for vehicles and tight structures while retaining enough velocity for the cartridge to perform. SIG's M400 line carries the fit, finish, and reliability standards of a company supplying the U.S. military's newest small arms, making this black-on-black SBR a serious choice for defensive use or the shooter building a premium short-gun setup.

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