By projecting 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 emitting from the laser bore tool travels in a straight line while the bullet follows a trajectory. Even thought the use of this device will get your very close, final adjustment should be made at the range

Features:

T6061 High class aluminum alloy in beautiful black matte

Four bore adjustable adapters to fit all 0.22-0.5 calibers

Screws already set in the factory when center aligning

Specification:

Power :< 5mw

Wavelength: 650nm

Weight: 132g

Length: 155mm.

Head Dia: 16mm

Tail Dia: 5mm