ABC RIFLE COMPANY AR-15 Ported Linear Compensator 3in Aluminum Muzzle Brake .223 Remington/5.56x45mm NATO 1/2x28 Anodized Black. Featuring a unique multi-directional 3-port layout and durable black anodized finish it combines performance with an aggressive profile. The 1/2x28in thread pitch ensures compatibility with standard AR-15 barrels chambered in 5.56 NATO or .223 Remington. Wrench flats make installation secure and hassle-free. An ideal choice for those seeking both function and form in a compact compensator. Specifications for ABC RIFLE COMPANY AR-15 Ported Linear Compensator 3in Aluminum Muzzle Brake: Manufacturer: ABC RIFLE COMPANY Color: Black Caliber: 5.56x45mm NATO .223 Remington Finish: Anodized Fabric/Material: Aluminum Threads per Inch: 1/2x28 Gun Make: AR Platform Gun Model: AR-15 Outer Diameter: 1 in Length: 3 in Weight: 3 oz Last Chance: Yes Gun Type: Rifle Package Contents: ABC RIFLE COMPANY AR-15 Ported Linear Compensator 3in Aluminum Muzzle Brake What firearm models does the manufacturer say ABC RIFLE COMPANY AR-15 Ported Linear Compensator 3in Aluminum Muzzle Brake is compatible with? The manufacturer suggests that ABC RIFLE COMPANY AR-15 Ported Linear Compensator 3in Aluminum Muzzle Brake is compatible with AR-15ABC RIFLE COMPANY MB15-FSP: AR-15 Ported Linear Compensator 3in Aluminum Muzzle Brake .223 Remington/5.56x45mm NATO 1/2x28 Anodized Black