Aimshot BS22320X Boresight Laser 223 20x Laser Cartridge 223 Rem Brass

The AimSHOT Laser Boresight System is the most precise, fastest, and most cost effective method to accurately sight your weapon. It projects a beam down the precise center of your bore. Align your sights, optic or laser with the boresight laser, and you are sighted in!
Arbors (sold separately) are available for this boresight to adapt it to many other rifle calibers.
Features and Specifications:
Manufacturer Number:BS22320X
Minimum sighting range: Three yards
Maximum sighting range: 100 yards
Wavelength: 632 nm
20x brighter for long range use
Output power: less than 5mW
Battery: (3) LR41
Battery life: 20 minutes continuous
Construction: Brass

Fits:
.223 Remington, 5.56 NATO