Precision Armament M11-SPR Severe Duty Muzzle Brake 1/2-28 223/5.56

The M11-SPR (Special Purpose Rifle) is a compact lightweight version of the M11 designed specifically for high precision AR-15 rifles and long range hunting rifles. A large symmetrical blast baffle along with compensated forward baffles provide unprecedented muzzle control and recoil management while minimizing induced bullet yaw for improved long range accuracy. Computer FEA optimized for maximum strength to weight ratio and Precision machined from heat treated stainless steel for superior durability. Features wrench flats for easy installation and removal. Fits .223/5.56mm rifles with 1/2-28 muzzle threads Accu-Washer Muzzle Alignment System recommended for installation to achieve best performance (not included). Specifications: Material: HTSR 416 stainless steel bar, HRC 26-32 Finish: Ionbond matte black finish Thread: 1/2-28 TPI Length: 2.225 Height: 0.990 Width: 1.125 Dia at Barrel: 0.750 Weight: 3.3 oz. Please NOTE: Do not use crush washers with this product.