Tales of Gear talks about his custom gas blowback rifle, the PWS- M16A1. For budding airsoft gunsmiths this can give you an inspiration to build your own.. "This is my PWS, the M16A1. It's a custom airsoft GBB rifle. The base was the Limited edition G&P/Prime M16A1 (the "Bomber"). This video is about the upper and what i have changed on it to make it look more like the real M16A1."