Does the job if you truly know how to use a bore sight - Allen Titan Laser Crossbow Boresighter

If you have used a true laser boresight then you know you zero the laser first. You Spin the laser and track the dot, make your adjustments to the laser itself until the laser dot does not move as the boresight is rotated 360 degrees. Once this is done you are ready to sight in the weapon you are using it on. All these reviews saying it is junk is not telling you they probably DID NOT zero the laser before using. Also a boresight is not meant to get you 100% on point, it is meant to get you close, you shoot and make adjustments. Sometimes you get lucky, sometimes it's a little off.