SN: HMX8152. Modern production, 9mm with a 4″ stainless steel ported barrel. Bore is excellent. Performance Center tuned striker-fired pistol with a Trijicon RMR red dot optic, co-witnessed 3 dot sights, lightening cut slide, ambidextrous slide release, accessory rail, and armornite finish. Overall condition is excellent. Includes an additional magazine, additional 4.25″ barrel with an excellent bore, and original box.