That is very interesting - many thanks for the link!
While they are not representative of the calibers of the real weapons, the P90 was the inspiration behind the compact bullpup Astraripper 5, and the MP-7 inspired the "hand and a half" Arms 3 (although that one only exists as a set of stats thus far...
The Arms 3 has a model but I hate it. I hate it more than... well, more than I hate... lots of things. You know, the stuff I hate. I hate the model I made for the Arms 3 as much as that. In fact more. I hate the Arms 3 model more than I hate the Arms 3 model - an infinite positive feedback of hate that can only end up with me deleting the model and starting again.