MY Premium Quality, Green BoreSighter Bore Sight kit with Button Switch, Adjustable Focus for 0.177 to 0.54 Caliber Rifles Handgun, Green Laser Dot with Rechargeable Battery (Upgraded Version)

Upgraded Powerful Green Laser improves its accuracy and stability in any condition, longer sighting range even in bright daylight, allows you to quickly and accurately target any scene or object. Laser class: IIIa. Max. Output Power:＜5mW.
Push Button Switch: Upgrade bore sight add push button switch function, control it conveniently.
Easy installation that just screw the adapter to the small end of the boresighter and insert it to the barrel. It can easily adjust elevation and windage, if needed.
Long Battery Life: upgraded rechargeable battery with longer battery life and longer service life than others, providing you with a better experience.
Adapt with superior materials, excellent metal structure design and assembled by professional craftsmen, it is durable and has long service life of trouble-free use