Yeah that’s my GSG-522 that I did more custom modifications to than most people have off-shelf aftermarket parts on their AR-15’s. There are subtle differences between an actual MP5K/40 and a GSG to tell them apart. Same with those M249/G36/xxxxx skin and stock conversions used for the 10-22 guts. Hence why I get a little ticked in this thread when people perk up with stupid know-it/no-fucking-way type comments before doing some research or just plain looking at the damn firearm a bit(coughskidcough).
Love me my GSG. Best thing JVG ever sold :rofl