Coming by using a 1/two x 36 thread pitch, it is the radial fluting that stands out to us. 8 weight reducing flutes give the KVP linear compensator structure a chance to collect and redirect all muzzle gases ahead and clear of the shooter. In this instance the end in https://muzzle-brake-for-beretta69135.wikipowell.com/5434395/not_known_factual_statements_about_beretta_92fs_muzzle_brake