The SIG Sauer P320 Compact is a striker-fired semi-automatic handgun with a small and lightweight design ideal for concealed carry. The innovative modular design allows the user to easily change the grip size or caliber with the use of exchange kits. This pistol features a polymer frame with a steel inner frame assembly and corrosion resistant Nitron coated stainless steel slide as well as an ergonomic textured grip. The Picatinny rail makes adding accessories a breeze while tool-free takedown makes for easy maintenance of the P320 Compact. DetailsAction Striker Fire - Caliber .45 ACP - Capacity 9 - Finish Matte Black - Grip Interchangeable Polymer - Sights Night - Barrel Length 3.9 - Overall Length 7.2 - Weight 25.8 oz - Unlike any other pistol in its class the P320 features a unique 5-point safety system standard on all models - Striker Safety - Disconnect Safet - 3-point Take Down Safety System - Takedown is prohibited without removal of magazine - System prohibits takedown without slide locked to the rear - Rotation of takedown lever allows disassembly without tools or trigger manipulation. - The unique modular design of the P320 offers the user the ultimate in flexibility to change calibers sizes and fit. Small medium and large complete polymer grip modules ensure comfortable and optimal fit for the widest range of hand sizes.