Suicide Neil shows how he turned an Action Army AAP-01 GBB Pistol into a Cyberpunk SMG with a Nerf blaster... "GBB pistols are fun, and I wanted to add to my collection with a GBB rifle or SMG; slight issue however, as those are typically very expensive and/or rare, with very little in the way of options. So, being the creative type I decided to take my crafting and modding skills and build my own, sort of.