That would be freaking amazing. I was thinking of doing something similar. Getting that 3 round burst would cost me way way way tooo much though! You can have full-auto and burst weapons in the States but need an NFA stamp. The sale of these weapons is banned after a certain year so the few that are around are artificially inflated to be worth thousands.This is a wicked looking build!
Being a Canuck, unfortunately aftermarket bull pup stocks or conversions are prohibited. Luckily, though, we have the Norinco type 97’s up here for relatively cheap. When the pocket book is a little more full, I might try my hand at building a BR from one of the games