ABC RIFLE COMPANY AR-15 Mini Tanker Style Recoil Compensating Muzzle Brake .223 Remington/5.56x45mm NATO 1/2x28 Nitride Black. Its flat top design and side-port configuration help reduce muzzle rise and felt recoil improving follow-up shot accuracy. Threaded at 1/2x28in it fits most AR-15 barrels chambered in 5.56 NATO or .223 Rem. Ideal for shooters seeking enhanced performance in a streamlined low-profile brake. Specifications for ABC RIFLE COMPANY AR-15 Mini Tanker Style Recoil Compensating Muzzle Brake: Manufacturer: ABC RIFLE COMPANY Color: Black Caliber: 5.56x45mm NATO .223 Remington Finish: Nitride Fabric/Material: 4150 Steel Threads per Inch: 1/2x28 Gun Make: AR Platform Gun Model: AR-15 Outer Diameter: 0.76 in Length: 2 in Weight: 3 oz Gun Type: Rifle Package Contents: ABC RIFLE COMPANY AR-15 Mini Tanker Style Recoil Compensating Muzzle Brake What firearm models does the manufacturer say ABC RIFLE COMPANY AR-15 Mini Tanker Style Recoil Compensating Muzzle Brake is compatible with? The manufacturer suggests that ABC RIFLE COMPANY AR-15 Mini Tanker Style Recoil Compensating Muzzle Brake is compatible with AR-15ABC RIFLE COMPANY MB15-FT: AR-15 Mini Tanker Style Recoil Compensating Muzzle Brake .223 Remington/5.56x45mm NATO 1/2x28 Nitride Black