.308 WIN Laser Bore Cartridge – Fits .308 WIN & 7.62×51 NATO firearms
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
Aluminum Construction
Batteries Included
Length: 1.8″
Weight: 0.4 oz

*.308 Win also works with these chambers: .243 Win, .260 Rem, .358 Win, 7mm-08