5.56 NATO / 300 Blk
The SIGM400 Enhanced is designed for use in law enforcement, military operations, the sporting field, as well as competitive shooting. The SIGM400 is a true AR platform tactical rifle with unparalleled accuracy. A 16Ã¶ Nitride treated barrel provides superior corrosion resistance, and a 7075-T6 aircraft grade aluminum forged lower receiver adds to the durability and reliability that users come to expect from SIG SAUER. This rifle comes standard with a black, FDE or ODG polymer Magpul forend, grip and collapsible stock and features a railed gas block.