The S&W SD pistol features a polymer frame; stainless steel slide and barrel; SDT- Self Defense Trigger for optimal, consistent pull from first round to last; ergonomic, textured grip; Picatinny style rail and textured finger locator on frame for same hand-hold each time. Includes 2 magazines Type Pistol Grips FDE Textured Action striker fire Safety No Series 9 Weight 22.30 oz Caliber 9mm Luger Capacity 16+1 Barrel Type Stainless Steel Sight Style Contrast Weight Range 16 oz to 31.99 oz Barrel Length 4" Frame Material Polymer Slide Description Serrated Barrel Length Range 4" to 4.99" Sight Configuration 3-Dot White