Description

Enhance your AR platform with the CMMG 5.7x28mm Barrel & BCG Kit, featuring a 5-inch black barrel and innovative Radial Delayed Blowback system. This design delivers a lighter bolt carrier group and reduced recoil, perfect for firearm enthusiasts seeking improved performance. Compatible with CMMG Mk57 and standard AR-15 lowers using CMMG 5.7 AR Conversion Magazines, this kit offers a seamless upgrade to the unique 5.7x28mm caliber.