Happy Burger goes over the details of the VFC P320 M18 GBB pistol to help you customise yours. This is an airsoft replica of the U.S. military's standard-issue SIG Sauer M18 pistol. This compact, optics-ready handgun offers a satisfying recoil impulse and can be further enhanced with a CO2 magazine for increased realism. Compatible with SIG Air Proforce P320 M17 magazines and also features a new VFC patented Guide-hop hop-up system.