They are accurate fall-in barrels with concluded chambers and do not typically have to have any gunsmithing. In scarce cases, the fitment could possibly be demanded. In that situation, please see your local gunsmith for appropriate installation. Beretta 92 Sequence third Gen. Prolonged Threaded Barrel 9mm on the market. The https://gunsandammunation.com/shop/beretta-typhoon-muzzle-brake-1-2x28-9mm/