The Precision Armament 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. FeaturesTop ports vent gases upward for muzzle rise mitigationDeep, recessed crown protects exit aperture from impact damageDigressing baffle thickness reduces baffle/projectile interactionPerfect bore alignment by machining brake threads in the same operation as bore aperture