Calibers: 9mm, or 45 ACP. Capacity: 7-round (.45 ACP) or 9-round (9mm) magazine. Barrel: 4.25” or 5”. Grips: Textured G10. Sights: Fiber-optic front, tactical rack, white-dot rear. Length: 7.9” or 8.6” overall. Weight: 31 or 40 oz. unloaded. Finish: Two-tone, black slide/stainless frame. Subtract 6% for the EMP variant.