Remington 870 Marine Magnum 12 gauge, it's nickel plated and looks cool as hell.
Colt 1991A pistol, the only reason I bought it was because I was given one of my uncles old WW2 holsters and that was the closest thing I could get to the sidearms they carried back then.
I also have two replica Old West guns that just fire blanks for when I want to act like the Rich Texan from the Simpsons.