Faxon Firearms .620in Streamline 3 Port Muzzle Brake Steel QPQ Nitride Black Small. 620in Streamline .223/5.56 3 Port Muzzle Brake is the answer to bulky modifications. These Muzzle Brakes & Compensators from the trendsetters at Faxon Firearms are crafted from the highest quality gun barrel steel to withstand tough use and repeated firings. With a lightweight construction the Faxon Firearms .620in Streamline 3 Port Muzzle Brake Bolt Carrier Group weighs in at just 1.12 ounces. Legal firearm owners will rejoice at the compact design of this aftermarket accessory. Configure your handgun any way you want with the Faxon Firearms .620in Streamline Type 1 Nitrided 3 Port Muzzle Brake. Specifications for Faxon Firearms .620in Streamline 3 Port Muzzle Brake Steel QPQ Nitride: Manufacturer: Faxon Firearms Color: Black Nitride Projectile Caliber: .223 Caliber Caliber: 5.56x45mm NATO Finish: QPQ Salt Bath Nitride Fabric/Material: Steel Threads per Inch: 1/2x28 Gun Model: AR-15 Outer Diameter: 0.62 in Length: 2.125 in Weight: 1.12 oz Features of Faxon Firearms .620in Streamline .223/5.56 3 Port Muzzle Brake 11I-BMB-FXSL3PTMB Material: Gun Barrel Quality Steel Caliber: .223/5.56 Package Contents: Faxon Firearms .620in Streamline 3 Port Muzzle Brake Steel QPQ Nitride What firearm models does the manufacturer say Faxon Firearms .620in Streamline 3 Port Muzzle Brake Steel QPQ Nitride is compatible with? The manufacturer says that Faxon Firearms .620in Streamline 3 Port Muzzle Brake Steel QPQ Nitride is compatible with AR-15Faxon Firearms FFMD556S63PSQPQ: .620in Streamline 3 Port Muzzle Brake Steel QPQ Nitride Black Small