Calibers: 9mm, 40 S&W. Capacities: 10, 17 (9mm); 10, 15 (40 S&W). Barrel: 4.25”, 3.7” (Compact), 3.0” (Carry). Weight: 28, 29 oz. Length: 7.5”. Sights: Fixed. Features: Striker fired, three interchangeable backstraps included, reversible mag release button, ambidextrous slide stop. Centurion is midsize with shorter grip and barrel. Magazine capacity is two rounds shorter than standard model. Tactical model is full size with threaded barrel. Values are for the full-size model; subtract 11% for the Carry model; subtract 33% for the Compact model; add 10% for the Tactical variant.