You've never heard of an M16? It's popular on GTA......
Ummm.... Most guns aren't held together by tape. Sure, it looks decently real in the "thumbnail", but enlarged you can tell it's taped together.
For the rounds....
That might help you for design, perhaps? You made the gun, the bullet shouldn't be a problem, really.
I was talkin about never hearing about a cardpaper gun when I said I've never heard of that type of gun Sorry for confusin you though...