CMMG, Inc 55AACF1 Mk4 B16 Rifle 5.56mm, 16" Barrel, 30 Rounds, BN, Black

When modularity, accuracy, and quality are all important, the Mk4 B16 is the rifle of choice. The Mk4 B16 features CMMG’s RKM11 KeyMod free float hand guard and nitrided bull barrel to maximize shot repeatability. All rifles ship with a 30rd magazine and feature CMMGs Lifetime Quality Guarantee. Features: - Hand Guard: CMMG RKM11 KeyMod hand guard - Furniture: A2 pistol grip, M4 butt stock with 6-pos mil-spec receiver extension Specifications: - Caliber: 5.56mm - Barrel: 16?, Bull, 4140CM, SBN - Twist: 1:7 - Muzzle: Target Crown - Upper Rcvr: Forged 7075-T6 AL M4 type upper, AR15 type lower - Trigger: Single stage mil-spec style trigger - Weight: 7.2 lbs (unloaded) - Length: 34? - Gas Port Location: Mid-length