Vector Optics VipeRay Muzzle Drop-in Green Laser Bore Sight
Magnetism, Super Easy to Use, 5mW, Fit Almost all Calibers (rifle, air gun and pistol etc) with Steel Muzzle
By project a laser beam from the center of the barrel axis of firearm, this laser bore sight collimator allows you to instantly & accurately set your sight or scope etc.
The laser light emitted from the laser bore tool travels in a straight line while the bullet follows a trajectory. Even though the use of this device will get you very close, final adjustment should be made at the range.
