M85, a modelgun/paintball hybrid

Saw one of these for sale, but without any rounds, and since they're an odd size (.375) and proprietary and not made any more, I'll probably pass... still, pretty cool. Basically a modelgun type mechanism, but using large Winchester primers instead of caps, and putting paintballs in the end as projectiles. Interesting hybrid anyway (wasn't sure which section to put this in, for example- modelgun type mechanism, blank firing almost in propulsion, and paintball in effect).

For the record, the guys in the video seem like a bunch of yahoos (no trigger control, looking down the barrel, shooting each other for laughs), but it's the best footage I could find:
https://www.youtube.com/watch?v=IYQx1WROhS0&feature=related