Bayattoo Universal Laser Bore Sight Kit for .177 to 12ga Multiple Caliber, Barrel Laser Boresighter with Press Switch for Rifles and Handgun Hunting Scopes with 2 Batteries

How to Use ? 1. Install the battery in the boresighter. Confirm the laser can be turned on correctly. 2. Select the proper adapter for your firearm. 3. Twist into the thread hole of the laser bore's small rob. 4. Tighten and loosen the screw to adjust the adapter size to fit your gun barrel. 5. Insert the small rod with adapter into the gun barrel. Make sure it fit snugly in the barrel. 6. Turn on the laser and adjust crosshair to align with the laser dot. 7. Remove the boresighter and adapter from the firearm. 8. Don't forget to test in the range and do the final fine adjustment. Specifications: Material: Aluminum. Laser Color: Red or Green. Laser Wavelength: Red (630-680nm); Green (532nm). Max. Output Power: ≤ 4.5mW. Laser Class: IIIa. Batteries type: CR2 3V 800mAh. Packing include: 1x laser Boresighter 12x Adapters 1x Screwdriver 2x CR2 battery (800mAh each battery） 1x Instruction manual

• 12 ADAPTERS: More adapter size options than other brands. Laser bore sight kit with multiple caliber fit any 0.17 to 12ga handguns, rifles, shotgun, which allows the accurate bore alignment of scopes, iron sights or laser sights on handguns and rifles.
• CAUTION: This tool is not available for the barrel with silencer. Keep the red laser beam away from eyes.
• HIGH ACCURACY: We tested every product twice before it is packed, and the upgraded adapters insures the boresighter is much more accurate than others.
• EASY TO USE: Comes with tools, just following using manual, choosing proper size adapter and insert the laser unit in the muzzle.
• 【LONGER BATTERY LIFE】: Upgraded the battery of the laser bore sight - 2 CR2 battery has ultra-long battery life and longer service life.