The Mk47 AKM is the premium 16.10? barrel version of the Mk47 uppers. The Mk47 T features CMMG's mid-sized receiver based on their Mk3 platform, carved from billet 7075-T6 aluminum. It also features an improved 15? hand guard designed to be compatible with aftermarket muzzle devices and suppressors. The Mk47 was designed to harness the power and reliability of the 7.62x39mm cartridge utilizing a robust bolt based off their Mk3 (.308). Every upper comes equipped with an SV muzzle brake.