It looks a lot like a crossover between a FAMAS and a P90, bull pup designs are awesome though. I don't see any charging handle or cheek rest however, that would give it a more unique look. Overall, well done.
Because bull pup rifles are superior to normal rifles, but people today are to accustomed to forward loading rifles, meaning that bull pups aren't catching on very quickly. But as history has shown, superior inventions and discoveries always prevail.
The modeling work is nice, so the peice isnt bad.However, you managed to ruin two wonderful firearms, The FN Project 90 and the GIAT FAMAS G1. As an art lover, I like it, as firearms enthusiast I am irritated. Good peice regaurdless.