The HBO comedy series Entourage
has an unusual use of a paintball gun. ("Give a little bit", Season 6, episode 12, 2009.)
Ari Gold (Jeremy Piven) arrives on the elevator, carrying an outlandish, brightly-colored paintball gun.
Ari meets up with one of his employees and asks how he's been. Before he can answer, Ari shoots him multiple times.
The gun appears to be firing actual paint, although probably at reatively low velocity and with quite a few barrel breaks.
"Great! I'm back, and you're fired." Here we can see the only part of
the paintball gun showing- a cast potmetal 90-degree frame, with a
cylindrical inline ASA. From this the marker inside was eventually
identified as a Kingman Spyder Sonix, though the grip panels have been
left off for some reason. The outer shell is a Banzai Twin Barrel Water Blaster
, a Supersoaker-type pump-up squirt gun.
The loader, however, is very clearly a Viewloader XSV Vlocity, with a rabbit sticker, on a standard plastic vertical neck.
The second employee takes multiple hits, both in front and in back. The paint and hits look real.
Ari is clearly enjoying himself despite doing something that would
almost certainly get him sued or even charged with assault and battery
in real life. :)
Some of the supposed CO2 vapor seen as the gun is fired, was clearly added digitally.
A slightly better look at the grip and the rest of the gun. I suspect
the reason the producers went to the trouble of making up such a wild
obviously-not-a-weapon marker was to avoid any association with actual
"office shooter" stories- to keep this vignette fun and lighthearted,
"holy crap he's here to kill us all!"
A YouTube video of this sequence can be found here