Install your P320 firing control unit into this Grip Module Assembly to convert to a P320 Full size chambered in 9mm .357 SIG .40AUTO. – Requires the 9mm .357 SIG and .40AUTO slide and barrel. – Medium grip size. – Please note – This grip module DOES NOT include the extended magwell and internal weight. – Specifications – Model P320 P250 – Caliber 9mm Luger 40 S&W 357 SIG – Grip Size Medium – Grip Texture Standard – Pistol Size Full-Size – Grip Module Array Medium – Weight 3.7 oz [104.89 g] – Manual Safety No – Magazine Disconnect Compatible No – Color Coyote Tan – Grip Material Standard Polymer – Reversible Magazine Release Yes – Removable Grip Weight Compatible Yes – Interchangeable Grip Panel No – Interchangeable Backstrap No