Firearms; Firearm attachments, namely, modular external rail systems for firearms; Firearm attachments, namely, modular external rail systems for attaching accessories to firearms; Firearm attachments, namely, mounts for attaching accessories to a firearm; Firearm attachments, namely, mounts for attaching ancillary equipment to a firearm; Firearm attachments, namely, mounts for attaching grips to a firearm; Firearm attachments, namely, mounts for attaching gun sights to a firearm; Firearm attachments, namely, mounts for attaching laser pointing devices to a firearm; Firearm attachments, namely, mounts for attaching lights to a firearm; Firearm attachments, namely, mounts for attaching night vision devices to a firearm; Firearm attachments, namely, mounts for attaching telescopic sights to a firearm; Firearm frames; Firearm hand guards; Firearm slings; Firearm tactical rails; Adapter inserts for firearms to allow for use of different gauges and calibers of ammunition; Automatic firearm ammunition belts; Barrel reflectors for firearms; Breeches of firearms; Carrying cases adapted for firearms; Cartridge case receivers for automatic firearms; Case covers for firearms; Covers for firearms; Foresights for firearms; Grip tape for firearms; Hunting firearms; Iron sights for firearms; Magazines for firearms; Non-telescopic gun sights for firearms; Safety catches for firearms; Sights, namely, open sights for use on firearms; Sights, other than telescopic sights, for firearms; Silencers for firearms; Sling straps for firearms; Sporting firearms; Stands for firearms; Supplemental chambers for firearms; Triggers for firearms; Weapon cases for firearms