The 9KT 9mm Pistol semi-automatic operation, powered by a roller-delayed blowback system, is primed for an optional NFA-registered auto sear pack, elevating its functionality. featuring a 5.16" nitride heat-treated barrel, designed with a 3-lug and threaded 1/2" x 28 pattern, optimized for suppressor attachment. Includes two magazines, rear sights adjustment tool, cable lock, single-point bungee sling and case. Specifications and Features:Action: Semi-AutoCaliber: 9mm LugerBarrel Length: 5.16"Capacity: 30+1Grips: Black PolymerBarrel Length Range: 5" to 5.99"