Was watching one of my favorite Bruce Willis movies (RED) and was trying to figure out one of the weapons used. You first hear about it when John Malkovich has that great line: "Frank, I never thought I'd say this again. I'm gettin the pig."

Turns out it was an M203 Grenade Launcher but it sure didn't look like the ones we had when I was in the service.

Anyway, Here's the movie link:

Red (2010) - IMDb

...and the link to the list of weapons used in the film.

http://www.imfdb.org/wiki/Red_(2010)

If you haven't seen it, it's a killer movie.