Manufacturer: Troy Industries SBRA-CLM-05BT-00
Directs muzzle blast and sound forward, away from the shooter, while retaining effective muzzle brake properties. Very low dust signature, without swirling effect. Works as an improvised breaching devise. 5.56/.223 (1/2 x 28 TPI)
Specifications and Features:
Weight: 3.48 oz.
Thread: 1/2 x 28
Material: Hardened 4140 Steel