Description
The 16.1” 5.7x28mm Barrel and BCG Kit is just the thing for building a carbine length AR in 5.7x28mm using CMMG’s patented Radial Delayed Blowback operating system. Unlike typical direct blowback systems, Radial Delayed Blowback not only reduces the weight in your BCG but it results in less felt recoil than a straight blowback system without sacrificing key features like last round bolt hold open. CMMG’s 5.7x28mm Barrel and Bolt Kits are designed to be assembled into aMk4/mil-spec AR15 upperand work with either aCMMG Mk57 lower receiverorMk4/AR15 mil-spec lower receiver(when using CMMG 5.7 AR Conversion Magazines). CMMG 57D88C3AR-15 Barrel and Bolt Carrier Group5.7x28mm FN16.1″ 4140CM BarrelThreadedPatented Radial Delayed BlowbackCMMG Lifetime Quality GuaranteeSalt Bath Nitride FinishMatte Black
Includes:BarrelBolt Carrier Group
