Abstract: A laser range finder has a first laser oriented in a first direction and a laser range transmitter and a laser range receiver oriented in a second and opposite direction, all mounted on an optical bench. The first laser having a small divergence and used to aim the laser range transmitter and receiver at a target of interest in order to determine the distance to target. The optics and electronics being housed in a housing that can be coupled to a weapon. The housing supporting a plurality of adjustors in contact with the optical bench to align the first laser, the laser range transmitter, and laser range receiver with a scope or iron sights on a weapon.