These are generally accurate fall-in barrels with finished chambers and don't normally call for any gunsmithing. In uncommon instances, the fitment can be essential. In that situation, make sure you see your neighborhood gunsmith for appropriate installation. Beretta ninety two Sequence third Gen. Extended Threaded Barrel 9mm on the market. https://gunsandammunation.com/shop/beretta-typhoon-muzzle-brake-1-2x28-9mm/