The Mk3 K is CMMG's primary short barreled Upper Group. The Mk3 K includes the RKM11 KeyMod free floating hand guard. The barrel is a nitrided 4140 CrMo steel, 12.5" long barrel chambered in 308 WIN. Each upper group includes CMMGs lifetime quality guarantee.
Features and Specifications:
Manufacturer Number: 38B92B3
Caliber: 308 WIN
Barrel: 12.5" 1:10 medium taper 416SS SBN barrel
Muzzle: A2 compensator, threaded 5/8-24
Hand Guard: CMMG RKM11
Receiver: Billet 6061-T6 AL LR308 type
Gas port location: Carbine
Installing this product will subject it to NFA laws and doing so without a license is a felony possession of a Class III firearm. Check your local laws.