Caliber: 9mm Parabellum or .40 S&W. Steel slide polymer frame, with interchangeable backstraps. Magazine capacity: 15/12 (9mm); 17/14 (.40). Other features include front slide serrations, Quick Defense Trigger with integral safety, ambidextrous slide, magazine release, adjustable rear sight and loaded-chamber indicator. Finish matte black. Weight 24.5 oz., barrel length 4".