An idea: FCC or Fight Club Custom is a company from Hong Kong that started out by making upgrades for PTW's, and now they're at the point where they can make an entire gun out of their upgrade parts.
Following their model wouldn't be a bad idea. Start off by making improvements and upgrades for already existing gas rifles, then eventually take what your innovations and throw them all into one gun.
Note that I don't mean simply reinforced parts...
Start with STANAG mags for the KJW platform.
