The CMMG Mutant is a unique hybrid platform that uses AR-15 lower ergonomics with an AR-10-sized upper receiver to accept standard AK-47 magazines. The 16-inch chrome-lined barrel in 7.62x39mm delivers AK ballistics in an AR-15 ergonomic package with AR accessories compatibility. The larger bolt face and bolt carrier are sized for the 7.62x39 cartridge, addressing the reliability issues that plagued earlier AR-15 conversions to this caliber. Type: Rifle Action: Semi-Automatic Caliber: 7.62x39mm Capacity: 30 Year introduced: 2015, USA Weight: 88 oz Overall length: 36.5" Status: Active Intended use: Home Defense, Hunting, Target Shooting