I do have to say, I thought I had a lot of mags. 13 plus 2 high caps I rarely carry... but damn, you've got a lot of mags, lol.
Looks like a mash up of TM/CA? Pretty sure mine is as well. It actually looks quite nice with the grey lower. And looking at yours makes me miss my sliding stock. I wonder who made my front sling loop is - it doesn't seem to fit a clone HK sling snap thing that I've got in a bin somewhere. Quite a disappointment, as key rings rattle like crazy.
BTW, that doesn't look like an "average" claw mount (
for example). Looks more like a high mount for HK MP5's/G3's, as found
here. Claw mounts clamp on via a lever, don't they? IDK, doesn't really matter, I guess.