Abstract: Equipment to simulate the firing of at least one projectile from a gun at a target such that a beam of electromagnetic radiation replaces the projectile trajectory. A hand held simulator includes a projector for generating such a beam of light, the power of which is no greater than 40 mW, in response to the operating of a trigger. If aimed correctly at the target, which is retroreflective, the beam is reflected back to the equipment and the reflected beam is received by a receiver which includes a collection of components connected in series. In view of the low power of the beam and the large distance over which the equipment is designed to operate, the components forming the receiver are designed to differentiate a fairly weak signal form the background light.