Product: MidTen .243 308 Bore Sight Red Dot Boresighters 308 with Three Batteries
Brand: MidTen
Color: Tan
Specification
 -- Length: 47.5mm; Tail width: 11.2mm; Head width: 7.5mm 
 -- Laser Wave length (nm:) 640 to 660
 -- LED Type: visible red laser 
 -- Power: <5 mW 
 -- Construction: Brass 
 -- Sighting Range: 15 to 100 yards 
 -- Operation: On/Off End Cap
 -- Temperature: -10℃ to 40℃ 
 -- Battery Type:3 X AG3 (Included)
 How to use the bore sight?
 1.Unscrew the back cap from the bore sight by turning counter clockwise
 2.Stand the bore sight on a flat surface with the laser side pointing down
 3.Insert batteries (+ side up) inside the rear opening
 4.Carefully push down and turn the screw cap clockwise to tighten the cap (the laser is now on)
 5.Place in your rifle’s chamber and close the bolt
 6.To remove - open the bolt if it does not automatically extract, manually remove the unit by tilting the rifle’s barrel upward (always practicing safe firearm practices)
 7.Unscrew the back and remove the batteries to turn the unit off
 Package included
 -- 1 X Bore Sight
 -- 3 X AG3 Battery 

Class IIIA laser, less than 5mW
Made to fit the .243 308 chamber, caliber specific.
Comes with 1 set batteries (3 AG3 batteries) which can last one and half an hour
Easy to sit perfectly in the bore. Sturdy brass construction. Fast gun zeroing and sighting.
High accuracy to reduce cartridges and shells wasted, sighting range of the bore sight is 15 to 100 yards.

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