This high quality Saiga Shotgun Muzzle Brake compensator is also perfect for a Vepr 12 Muzzle Brake. This Saiga 12 gauge shotgun muzzle brake tactical door breacher threads onto your original Saiga 12 or 12 Vepr 12 gauge shotguns barrel M22 X 0.75 right handed thread size for a perfect fit on your Saiga 12 and Vepr 12 shotgun barrel. This Saiga 12 muzzle brake compensator is approximately 3.13" long and made of heat-treated hardened steel with a high-quality polished finish.