If You Ain't Got a Weapon... is a double compilation CD by UK Britrock band 3 Colours Red, covering their period with independent label Creation Records. The first disc features the band's singles plus two live tracks, while the second consists of B-sides. Both discs were compiled by frontman/bassist Pete Vuckovic. He also contributes handwritten sleevenotes. It was released by Sanctuary Records in 2005, alongside other compilations by Swervedriver and The Boo Radleys as part of their Creation Anthology. The album title comes from the lyrics of one of their most successful songs, "Nuclear Holiday".