US Patent 8256153 Laser sighting device

A laser sighting device having a laser sight body with a barrel aperture formed through the laser sight body; two or more laser emitter apertures formed in the laser sight body; a laser light aperture extending from a bottom wall of each laser emitter aperture through the laser sight body; a laser emitter for each laser emitter aperture; wherein a laser emitter is fitted within each laser emitter aperture; a cap associated with each laser emitter aperture; wherein when the cap is a threadedly connected and sufficient torque is applied to the cap, the laser emitter produces a laser light beam that is projected through the laser light aperture.