Better hurry, only 3 left in stock. Mines on the way
https://www.sigsauer.com/store/upper-sigm400-300-blk-9in-blk-keymod-kit-less-bolt-carrier-group.html
Bronze
https://www.sigsauer.com/store/uppe...onze-spartan-kit-less-bolt-carrier-group.html
https://www.sigsauer.com/store/upper-sigm400-300-blk-9in-blk-keymod-kit-less-bolt-carrier-group.html
Bronze
https://www.sigsauer.com/store/uppe...onze-spartan-kit-less-bolt-carrier-group.html