The next evolution in Pistol Caliber Carbine recoil control has finally arrived.The VG6 GAMMA 9mm BBSS sets a new standard when it comes to recoil management by virtually eliminating any muzzle movement.This muzzle brake / compensator hybrid virtually eliminates recoil and minimizes muzzle movement. The unique combination of both braking and compensating features inspire shooter confidence and allows the shooter to make very fast follow up shots. Its unique porting design has been optimized for the pressures of 9mm, providing a very soft feel in the shoulder thanks to gas ports dimensions that have been strenuously tested to give the utmost control to the muzzle.Features:Material: 17-4ph Heat Treated Stainless SteelFinish: Bead Blasted Stainless SteelSurface Hardness: 68RCCaliber: 9mm onlyThread: 1/2-28 RHWeight: 2.1ozIncludes crush washerSpecifications:Made In AMERICA: YesFinish: Bead Blasted Stainless SteelPlatform: AR15Manufacturer: VG6 PrecisionWeight: 2.1 ozOther Features: Length: 1.75"