The .223 REM MAG Laser Bore Cartridge fits .223 REM/5.56 NATO firearms (AR-15/ M4/ M16).  Red Laser 635-655nm , Max output <5mw, Class IIIa Laser

Save time and ammunition with these high grade brass Bore Sighters. Sight in your rifle anywhere. Designed to drop right into the chamber of your firearm projecting a straight Laser Beam right down the middle of the bore giving you precise trajectory.

Easy to use, just install the batteries into the laser cartridge and screw on the base, which turns the laser on. Remove Batteries to turn unit off. Factory pre-aligned cartridge bore sighters, helps with zeroing your optics.  Brass construction. Batteries included.

Length: 1.8"

Weight: 0.3 oz

Fits: .223 REM/5.56 NATO firearms