Install your P320 FCU (fire control unit) into the Sig Sauer AXG (Alloy X Grip) metal grip module to experience the unique blend of style and shootability of a classic metal frame pistol.Precision machined with deep undercuts and an extended beavertail for an ergonomic, comfortable fit and is fitted with interchangeable Black polymer grip panels and a Medium Black back strap. FeaturesCarry sizeAluminum alloyMedium gripInterchangeable black polymer grip panelsBlack anodized grip module