Barrel of a Gun is Guster's first single released off the Lost and Gone Forever album. It is also on the live CD and DVD Guster on Ice. The band performed the song on television shows such as Late Night with Conan O'Brien. A typewriter can be heard used as a percussion instrument during the song, and, during live performances, it is tradition for fans to count down with their fingers during the "4, 3, 2, 1" line of the song. Fellow rocker Tim Mosley from Hartford, CT also contributed to the writing of the song. Tim was lead singer of his band distinctly named, "Sexual Chicken" which were formed with High School friends who hailed from Winsted, CT.