1) French garage psychedelic rock band with two albums, 'No More Invention' their debut album from 2008, and Manifesto Zero, the 2010 follow-up. Gunslingers were formed in either 2005 or 2006, initially with just Greg Raimo on guitar/vocals and Antoine on drums, they later added Matthieu on bass. Antoine and Matthieu are also members of Aluk Todolo & Diamatregon. Greg previously released a 12 inch EP titled Xperiment From Within The Tentacular.
2) There is also a Norwegian band who is named Gunslingers, they released their first album in the beginning of 2008.
3) German Glam Rock band. Released an album called For My Mom.