VG6 Gamma Features The Gamma 556SL is long enough to provide an overall length of 16″ when permanently affixed to the barrel. Its outside diameter of .745 inches allows you to install and service your gas system without removing the muzzle brake. The 3-chamber design looks great on any standard profile barrel while effectively eliminating recoil leaving your rifle shooting flat and soft. Made in the USA. VG6 Gamma Specifications Brand: Aero Precision Caliber: 5.56x45mm NATO Model: VG6 Series: Gamma Finish: Nitride Color: Black Material: 17-4 Stainless Steel Firearm Fit: AR-15 Diameter: .745″ Includes: Crush Washer Thread Pattern: 1 / 2″-28 tpi Weight: 2.10 oz More Information Caliber 5.56 Condition New in Box Finish Per Color Black Manufacturer Aero Precision Manufacturer Part Number APVG100038A Model VG6 Gamma Type Muzzle Brakes UPC 815421028737
