The 80X threaded barrel is a drop in replacement to enhance your 80X pistol, and allow the use of appropriate threaded accessories with it’s 1/2x28 threading. These are true drop-in barrels with finished chambers and do not generally require any gunsmithing. In rare cases, the fitment may be required. In that case, please see your local gunsmith for proper installation. Features: Caliber: .380 auto1/2x28" thread pitchLength: 4.4"Material: Carbon steel with black finish Beretta 80X Cheetah .380 Auto 4.4" 1/2x28 Black Barrel Assembly JB80X380TH