Bayattoo Bore Sight 9mm/.40 S&W/45ACP/223REM Laser Sight Red Dot Boresighter with 9pcs Batteries

Specification ✫ Power: <5 mW ✫ Laser Wavelength: (Red) 630-680nm ✫ Material: Brass ✫ Temperature: -10℃ to 40℃ ✫ Battery Type: AG3/LR41 (Included) How to use the boresighter? 1. Unscrew to open the end cap from the boresighter counterclockwise. 2. Insert 3 batteries (all of + side up) inside the boresighter. 3. Carefully push down and screw end cap clockwise to tighten, and the laser will turn ON. 4. Place in your gun’s chamber and close the bolt, Start the zeroing and sighting work. 5. To remove after uing - open the bolt if it does not automatically extract, manually remove with the aid of a pencil. 6. Unscrew the end cap and remove the batteries to turn OFF. Package included 🎁 1 X 9MM Boresighter 🎁 1 X 223REM Boresighter 🎁 10 X AG3/LR41 Batteries

• [Parameters] Class IIIa, less than 5mW, Wavelength 630-680nm red laser. The sighting ranges from 15 to 100 yards, with the darker the environment and the brighter the laser dots.
• [Application] This laser sight kit includes three calibrators, 9mm, 40SW and 45acp, Made to fit the 9mm, .40 cal and .45 cal chamber.
• [Accuracy] Easy to sit perfectly in the bore. Quick reset zeroing and sighting system and save you time and cartridges.
• [Design] Sturdy and durable brass construction, doesn't hurt the barrel. Light and compact, Portable packaging.
• [Batteries] Comes with 9pcs UPDATED batteries (AG3/LR41). Please remove the batteries after use.