NcStar .223 REM Laser Cartridge Bore Sighter

Features: • .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 • 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 • Length: 1.8" • Weight: 0.3 oz