Troy Medieval Muzzle Brake 5.56mm 1/2x28 TPI Black SBRAMEDO5BT00. Serves as improvised breaching device. Constructed of hardened 4140 steel with parkerized finish. Weighs 3 ounces. Length is 2.25 inches. Black. Specifications for Troy Medieval Muzzle Brake 5.56mm 1/2x28 TPI Black SBRAMEDO5BT00: Mfg Item Num: SBRAMEDO5BT00 Type: ACCESSORIES - GUN ACCESSORIES - RECOIL SUPPRESSORS AR-15 Parts: AR-15 Parts made in specialized factories: made in specialized factories Tactica: Tactical Model Header: 5.56mm/.223 Master Model Header: Medieval Muzzle Brakes The Troy Medieval Muzzle Brake 5.56mm 1/2x28 TPI Black SBRAMEDO5BT00 is a quality addition to the Troy Industries lineup. For more great deals on Muzzle Brakes & Compensators by Troy Industries please browse our Troy Gun Parts page. Troy Medieval Muzzle Brake 5.56mm 1/2x28 TPI Black