Boresighters; Rifle scope rings; Adjusting knobs for gun sights; Firearm attachments, namely, mounts for attaching laser pointing devices to a firearm; Firearm attachments, namely, modular external rail systems for attaching accessories to firearms; Holsters; Tripods and stands for firearms; Sights, namely, open sights for use on firearms; Magazines for firearms; Sights, other than telescopic sights, for firearms