its mad hard to find ammunition for those so he probly cant shoot many of them. and i bet his penis isnt on the large side either, but still, he's got quite a bit of history in there. i spy some PPSh's, BAR thompson m1a1, mp44, mp40, mauser karbine (kar98k), you get the idea. all i gotta say is, those are rare and nice guns, but if i was him i wouldnt shoot many of them.
if he had all brand new assault rifles and such, THEN id hate on him. otherwise, thats impressive.