The SIGHTMARK 40 S&W Boresighter is an easy-to-use system for sighting rifles and pistols without firing a shot, compatible with scopes, red dot sights, and iron sights.
Constructed from durable machined brass, it includes a red laser and batteries, and is designed to fit in the chamber with a simple action to project a beam for aiming adjustments.
Supplied with two AG5 batteries, a nylon carrying case, and instructions, this boresighter is available in various calibers and has a sighting range of 15-100 yards.