These are definitely correct fall-in barrels with concluded chambers and don't typically call for any gunsmithing. In rare scenarios, the fitment may very well be demanded. In that situation, be sure to see your local gunsmith for correct set up. Beretta 92 Collection third Gen. Extended Threaded Barrel 9mm available https://beretta-92fs-muzzle-brake29741.newsbloger.com/27349226/the-single-best-strategy-to-use-for-muzzle-brake-for-beretta-92fs