Bore Sight 9mm/.40 S&W/45ACP/223REM Laser Sight Red Dot Boresighter with 9pcs 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] The kit includes two calibrators, 9mm and 40SW, Made to fit the 9mm and .40 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.