My favorite is the 50 Cal M2. I haven't fired one in 41 years...
Oh yeah, that would be a pleasure to fire....but how easy is it to lug around if your not Ahnuld?
I have been at the other end of one of these, they are only safe if you are standing behind the "safe" end 

I have no idea. Never had a chance to play with one. I just thought they were fun to draw. They have a pretty distinctive sound, tho', that much I DO know.
