SN: 643-57437. Modern production, 5.7X28MM with a 5″ barrel. Bore is excellent. Full-size polymer frame semi-auto pistol with a fiber-optic, adjustable ghost ring rear sight, M*CARBO short-stroke flat trigger, ambidextrous manual thumb-safety, accessory rail, and black oxide finish. Finish shows light marks. Overall condition is very good. Includes 3 d original case.