Adjusting knobs for gun sights; Air pistols being weapons; Bipods for firearms; Boresighters; Firearm attachments, namely, mounts for attaching gun sights to a firearm; Firearm attachments, namely, mounts for attaching telescopic sights to a firearm; Firearm frames; Iron sights for firearms; Noise suppressors for guns; Non-telescopic gun sights for firearms; Sighting mirrors for guns; Sighting mirrors for guns and rifles; Sighting mirrors for rifles; Sights, namely, open sights for use on fir...