Adjusting knobs for gun sights; Component parts for guns; Firearm attachments, namely, mounts for attaching gun sights to a firearm; Firearm attachments, namely, mounts for attaching telescopic sights to a firearm; Iron sights for firearms; Non-telescopic gun sights for firearms; Open sights for use on firearms; Sighting mirrors for guns and rifles; Sights, other than telescopic sights, for artillery; Sights, other than telescopic sights, for firearms