Sightmark .40 S&W Premium Laser Boresight

This is one of the simplest bore sighters you will ever use. Simply chamber the bore sight like a normal cartridge and a laser will shoot out of the barrel showing exactly where your rifle or shotgun is aiming. This will save time and ammunition as only a few shots will have to be fired for fine tuning. Notes: Caliber or gauge specific bore sight Red laser has a wavelength of 632 to 650, uses less than 5 milliwatts approximately 1 hour of battery life Sighting range 15 to 100 yards Will display a 2" dot at 100 yards Brass outer case Operating temperature 14 degrees F to 122 degrees F Includes a carrying pouch