Laser Bore Sighter Kit for calibers .177 to .50

This boresighter is designed for sighting in your rifles and shotguns without firing a shot. The sight will emit a straight red laser beam, providing precise reference for zeroing in your sights or scopes.
Features:
Fits any .177 to .50 caliber rifles, handguns, and scopes
Allows for quickly and accurately resetting of any sights (iron, optical, laser, holographic, etc)
Windage and elevation adjustable
Long sighting range
Light weight and durable
Comes with tools, seven adapters, and batteries
Specifications:
Max. Output Power: less than 5mW Class II Laster
Weight: 1.34oz/38g
Material: T6061 High Class Aluminum Alloy
Length: 5.9″/150mm
Head Dia:0.75″/19mm
Tail Dia:4.3mm
Length of rod that fits in the barrel: 2.36″- 3.54″/60mm – 90mm (tapered)
Laser wavelength: 630-680nm
Laser color: Red
Power: AG13 batteries
The elastic telescopic diameter range of the elastic positioning core adapter (inch): 0.177-0.210; 0.220-0.270; 0.280-0.349; 0.350-0.434; 0.435-0.500; 0.510-0.600; 0.710-0.780, a total of 7 elastic positioning cores.
Included:
1 Red laser sight,
1 battery compartment,
7 Elastic positioning core,
1 Phillips small screw,
1 Black wrench
Operation
This unit is with three pieces of AG13(may be called #76,LR-44etc)batteries installed.
The Laser will be on when you rotate the switch a half turn in either direction until you
fell a click. To turn the laser off rotate another half.
To replace batteries,turn the Switch/Battery Compartment to the ON position.Push
switch forward (toward the laser end) slightly and lift out from rear. Do not adjust these four front screws.
These screws are set in the factory
when aligning.

This boresighter is designed for sighting in your rifles and shotguns without firing a shot. The sight will emit a straight red laser beam, providing precise reference for zeroing in your sights or scopes.