AK-74 thread type JMac Customs RRD-4C multi-caliber muzzle brake (RRD-4C)
The RRD-4C muzzle brake by JMac Customs is designed for installation on modern AK-74 type thread weapon systems. The universal muzzle brake can be used with 5.45x39, 5.56x45 and 7.62x39 (requires an adapter mount) ammunition. Reduces recoil and counters the barrel climb.