Kolpin ATV’s Gun Boot™ IV’s polypropylene shell provides heavy-duty protection for your rifle or shotgun. Gun boot is anatomically designed to accommodate left and right-handed bolt-action rifles or shotguns. The Impact™ lining for shock absorption and protection is removable and replaceable. There is enough room in the Gun Boot™ IV for 50mm scopes or rifles with slings attached. Mounting system is available for mounting the Kolpin Gun Boot™ to virtually any ATV. The Gun Boot™ IV is airline approved.