Protean double stack reciever mod

Protean front end (and pusher) remix for use with MisplacedMoose's double stack double feed magazines. The motor covers need to be redesigned to accommodate for the re-routed wires, but i got lazy. I'll probably do it later if somebody reminds me to. I also only modded the top cover for the single stage variant of the protean, so you're probably gonna have to frankenstein a two stage cover front half on if you want that. Also there is no .step files because i got lazy and edited this in blender because solidworks didn't want to work and i felt lazy. have fun.