Sightmark 20 Gauge Laser Boresighter - Brass
The Sightmark Universal Laser Boresight provides a convenient and accurate method for sighting in rifles and pistols of all types. This green laser has a retractable arbor for instant centering. Simply place the base of the boresight onto the end of the barrel and it will attach magnetically. The included lightweight carrying pouch protects the boresight. Included are batteries.