Model APX 9mm 4.25 Inch Barrel 3-Dot Sights Accessory Rail Black Finish 17 Round. Full size polymer and metallic framed semi-automatic with striker-fired operating system. Removable, serialized chassis frame. Ambidextrous slide stop; magazine release button can be easily reversed. Short reset trigger set at six pounds. Equipped with 3-dot sight system; mil-std 1913 picatinny rail; automatic striker block safety. Full length slide serrations. Comes with three interchangeable back straps for a custom fit. Large magazine plate for easy extraction. Squared trigger guard. Grip width: 1.2 inches. Unloaded weight: 26.8 ounces. Made in Italy.