The Lantac Dragon MB 223/556 Muzzle Brake is engineered for .223 Rem and 5.56 Nato calibers. It features the Dead Air KEYMO mounting system specifically designed for the Wolfman suppressor. The 3.9-inch length allows for effective muzzle control and recoil reduction.Key FeaturesMounting System: Compatible with Dead Air KEYMO suppressors, enhancing versatility.Length: Measures 3.9 inches for optimal performance.Caliber Compatibility: Designed for .223 Rem and 5.56 Nato rounds.