This SigSauer P320 Compact X-Grip adapts Higher Capacity Sig P320 & P250 FULL-SIZE Mags to fit in the Sig P320 Compact model. Plus the X-Grip Mag Extension for the P320 Compact lengthens the grip area to give you a more effective grip on it’s smaller frame and increases the round capacity by adapting the higher capacity Sig P320 & P250 FULL-SIZE magazines for use in the Sig P320 Compact. Easy to install with no tools required… Simply slide it over the top of the longer magazine to fill in the gap where the magazine sticks out of the frame which enhances the look as well as your grip. Works great for conceal and carry use. Made of durable elasticized polymer, which is soft to the touch.