Rechargeable Bore Sight Kit Green Dot Boresighter with Button Switch Fit Any .17 to .54 Caliber Firearm

Specifications: Material: Aluminum. Weight: 49g Length: 5.9"(150mm) Big end Diameter: 0.74"(19mm). Small end Diameter: 0.16"?4mm?. Shortest barrel available: 1.88"(47.8mm). Max. Output Power: ? 4.9mW. Light class: IIIa. Light Color: Green. Batteries type: 3.7V 280mAh, rechargeable. Install: Simple and easy for using. Just screw the adapter on the small end of the tool and insert the tool into the barrel. Only need few minutes to zero your scope.

• ?Upgrade 7 Adapters??Green laser sight contains 7 adapters, 7 adapters will fit most of calibers, rifles, pistols, handguns and scopes from .17 to .78. Buy one set for most of your firearm, saving money.
• ?Visible Green Dot Indoors/Outdoors?:Brightly and allows to bore sight in daylight, It is to sight in a rifle scope at 25 and 100 yards at an indoor& outdoor range and can see the laser on the target.
• ?What included?:Uses one 3.7V rechargeable battery. Aluminum construction. Allen key. Screwdriver and 7 adapters in the box.
• ?Easy for Using?:Sensitive button switch, convenient to control, just lightly press to turn ON/OFF the laser.
• ?Caution?: Avoid the eyes to be exposed to the beam directly.