Probably the most famous airsoft GBB pistol in recent years due to myriad ways of customising it, Tactical Chicano talks about the Action Army AAP-01 GBB Pistol if it is really worth buying it in this video. The Action Army AAP-01 is a green gas-powered pistol with a polymer frame and a threaded outer barrel. It is similar to the Ruger MK4 and features a fair amount of felt recoil and snappy cycling. The AAP-01 is also semi-automatic and full-automatic, making it a versatile and fun gun to shoot. It has adjustable hop-up and can be fitted with optics, lasers, and lights.