Caliber: 9mm LugerType of Firearm: semi-automatic rifleMagazine Capacity: accepts standard Glock 9mm magazines Sights: fully adjustable front sight, fixed rear sight BBI length is 17.5"Overall length is 35.5" Weight is 7.7 pounds w/magMuzzle Thread is 1/2x28 RHComes with one Glock Style 33rd Mag.