Crimson Trace LaserLyte Universal Laser Bore Sight

Universal laser bore sight kit fits .22 to .50 caliber rifles and pistols
Fits firearms with a minimum barrel length of 3 inches
Simply slide the laser into the barrel, shine the red dot down range at 25 yards, adjust crosshairs to the laser and then head to the range
Should only need 2-3 rounds to finish sighting in
Adapter set includes (4) adjustable pieces that include four screws and matching hex wrench
Brightest, most powerful laser legally allowed to produce
Laser dot can be seen over 100 yards away at night

Power Output: 630 - 670nm, <5mW, Class: IIIa
Battery Life: 1.5 hours constant on
(3) Silver Oxide Batteries Included
Rugged 6061 T6 Aluminum Construction