A protective cover for a firearm having a front muzzle portion; a rear slide portion substantially parallel to and spaced apart from the front muzzle portion; an elongate body portion extending between and secured to the front muzzle portion and the rear slide portion; a trigger guard cover portion that extends from the body portion to cover at least a portion of a trigger guard of said firearm to be disposed within the protective cover; and a longitudinally extending cover opening in the body portion through which at least a portion of said firearm extends to be disposed within the protective cover, wherein said cover opening extends between said trigger guard cover portion and said rear slide portion.