These are accurate drop-in barrels with completed chambers and do not generally call for any gunsmithing. In uncommon instances, the fitment may very well be required. In that case, be sure to see your local gunsmith for appropriate installation. Beretta 92 Collection third Gen. Extended Threaded Barrel 9mm available. This https://gunsandammunation.com/shop/beretta-typhoon-muzzle-brake-1-2x28-9mm/