The Griffin MK2 rifle series builds on the features of the MK1 by improving the foundation of the rifle; its lower receiver. The Griffin MK2 fully-ambidextrous lower receiver is manufactured using aerospace manufacturing techniques to derive sub-mil-spec tolerances. All control features are mirrored affording full-ambidextrous functionality, using intellectual property developed by Griffin Armament circa 2013. The rifle due to its barrel length must have a pinned and welded muzzle device prior to leaving the factory. he MK2 PATROL 14.50" Carbine features a tuned mid-length gas system and suppressor optimized buffer system ensuring a soft yet reliable gas system suppressed or unsuppressed. Features a 416R SS barrel; P&W Griffin Silencer Mount Muzzle Device; Griffin A3 grip; Griffin Contour Connect QD end plate; Griffin Maritime receiver extension and Griffin ECS (Extreme Condition Stock). Includes one USGI D&H Industries 30rd magazine. Barrel 14.50" + P&W Muzzle Device = 16"