These are generally accurate drop-in barrels with finished chambers and don't commonly call for any gunsmithing. In unusual conditions, the fitment could be needed. In that scenario, remember to see your local gunsmith for appropriate installation. Beretta ninety two Series third Gen. Extended Threaded Barrel 9mm available for sale. This https://gunsandammunation.com/shop/beretta-typhoon-muzzle-brake-1-2x28-9mm/