This is a track from Weapons, the fifth studio album by the Welsh Alternative Rock band Lostprophets. The record was released through Visible Noise in the UK and Epic in the US on April 2, 2012.
The song was inspired by a discussion that lead vocalist Ian Watkins was having with bass guitarist Stuart Richardson. Watkins recalled to Kerrang!: "We were having a conversation on the bus one night and Stu - who always comes up with one-liners that I turn into song titles - said, 'if you bring a gun, we'll bring an arsenal.'"