did the clips load in from the side or the bottom, becasue if it was from the side that would be a really old tippman, it was the first full auto marker avalible.
you gotta be kiding me, its a tippmann smg from 1992 on to the late 90's. It looks like a tippmann because it IS!! Goosh. Look it up here-http://www.mcarterbrown.com/collection3.0/icons/Tippmann%20-%20SMG%2068.jpg
A.T. Systems makes these, and I believe they still make them. You can always find a handful of these at almost any big scenario game. The magazines are pretty expensive but you can put a hopper adapter on it, and yeah the foregrip can be a magazine on some of them.