Frag - Deadlands

From Steve Jackson Games:
The fast-moving "first person shooter" boardgame... mutated into the Weird West! This is a complete game which combines the award-winning Deadlands background with the fast, fun Frag rules. Play as a magic-using huckster, an undead Harrowed gunslinger, or a Mad Scientist... frag your foes on the main street of Doomtown, and hang them on the gallows!

You don't need the original Frag to play... but if you have them both, you can combine them.