AimShot BS9 9mm laser bore sight module. Designed to make it quick and easy to bore sight your pistol/rifle chambered in 9mm Luger. This is an actual laser bore sight, no additional parts are needed. Insert brass laser module into chamber and align scope reticle to match laser beam at 20 yards. Remove laser and proceed to the range for final adjustments at whatever range you want your zero. <5mW FDA Class IIIa laser
 
The 9mm Bore Sight uses 3 of the smaller L626/AG4 batteries, so the laser output is limited in time. Make sure that you have the pistol set up to do your adjustments quickly as the battery life is 5-15 minutes depending upon battery output. Must use alkaline batteries with the BS9. Two sets of batteries are included.
 
Compatible with the accessory MBP9 Modular Battery Pack 9mm that allows you to convert the BS9 to the MBS9 and runs on 2 AAA batteries for 20+ hour battery life. Not included.