I don't shoot it a lot, but when I do it is pure FUN. CO2 Powered, and BB's for ammo, and it can empty a 30 round magazine so fast you don't want to blink or you'll miss it. Full and semi auto. Looks like, and has the same size and controls as the real thing (It is lighter).
The only down side is reloading the magazine is a bit of a pain. If I still lived "up in the country" I'd probably wear it out. Unfortunately, where I live now, I can't shoot it like I'd want to. The SWAT team would be here in a few minutes I'm sure.
But to the original question, I suppose my most fun gun, that actually gets shot, is my Smith and Wesson Model 15-2. I've gotten to where I don't shoot any 38's but wadcutters, and it's just fun to shoot them in this gun.
View attachment 1201404