Ammunition casings; ammunition magazines and component parts for ammunition magazines; belts adapted for ammunition; component parts for guns; component parts for pistols; component parts for rifles; component parts for shotguns; firearm attachments, namely, modular external rail systems for firearms; firearm attachments, namely, mounts for attaching accessories, ancillary equipment, grips, gun sights, all to a firearm; gun mounts; loading clips for pistols; loading clips for small arms; maga...