Manufaturer Part Number: GRIPMODXCA943SMCOY(magwell & weight compatible) install your p320 firing control unit into this grip module assembly to convert to a p320 xseriescarry chambered in 9mm,.357 sig,.40auto with your selected grip size.Requires the 9mm,.357 sig and.40auto slide and barrel.Please note - the xseries grip modules will not work with magazines that have "sig sauer" on the baseplate.They are compatible with the baseplates that have the sig mark on it.Gun Model: P320Frame Finish: Coyote TanFrame Material: PolymerGun Type: Pistol