StoneSky 12 Gauge Boresighter Red/Green Dot Laser Bore Sight Cartridge with Power Switch

Features

Precision accuracy, reliable and durable.

Fastest gun zeroing and sighting that can save your ammo and time.

Easy to sit perfectly in the bore.

Compact and lightweight, easy to pack and travel.

Output power< 1mW

Battery Installation

Unscrew the end cap and insert the 3 AG13/LR44 batteries(+side up).

Screw the back cover and Push the Switch