The gun you saw in film or on television, and had to have, even if it wasn't all that great in reality. For me, season 1, Miami Vice, "Evan", greatest episode of the entire series. Undercover guy is selling MAC 10s, has three stylish mannequins suspended in a warehouse. Gives his selling spiel, and lets a pair of them rip. Not great guns, but still want one to this day, and that was the early 80's. What's yours?