CMMG 57CA2CB-AB Lower Receiver Assembly, Mk57, Armor Bla

Lower Receiver Assembly, Mk57, Charcoal Green

Lower Receiver Assembly, Mk57, Midnight Bronze

Lower Receiver Assembly, Mk57, Sniper Grey

Upper Receiver Assembly, Mk47, Armor Black

Inspired by the success of the original MkG, the MkGs lower receiver is designed to accept either 9mm or .40 S&W Glock and SGM magazines. Features include an integrated trigger guard, last round...