Boresighting systems and methods are disclosed. In one embodiment, an assembly adapted for boresighting a launch system includes first and second elongated members adapted to be coupled to the launch system. First and second alignment members are coupled to and extend between the first and second elongated members and are adapted to position the elongated members in a substantially aligned, spaced-apart relationship. A mirror assembly is coupled to each elongated member, the mirror assemblies being adapted to provide an average angular position resulting in a single corrector value for the launch system. In a particular embodiment, each of the first and second elongated members is sized to simulate a Stinger missile.