Abstract: A light emitting module is attached to one of a pair of separable U-shaped metal clamps that can fit around a weapon trigger guard. The clamps have recesses for retaining elastomeric inserts which contact the trigger guard. The inserts are of inexpensive glass-filled molded plastic rather than machined steel so that a greater variety can be provided at low cost and little value is lost by discarding those not needed for a particular weapon. The greater variety provides a better fit with little or no custom shaping and the elastomeric inserts are much easier to shape if an unusually contoured trigger guard is encountered. A slide switch passes through the clamp and is actuated by either a right or left handed user. The motion of the switch is transverse to the trigger guard and firing direction of the gun.

Abstract: A light emitting module is attached to one of a pair of separable U-shaped metal clamps that can fit around a weapon trigger guard. The clamps have recesses for retaining elastomeric inserts which contact the trigger guard. The inserts are of inexpensive glass-filled molded plastic rather than machined steel so that a greater variety can be provided at low cost and little value is lost by discarding those not needed for a particular weapon. The greater variety provides a better fit with little or no custom shaping and the elastomeric inserts are much easier to shape if an unusually contoured trigger guard is encountered. The electrical cord running to the on/off switch for the module emerges from the module in fixed relationship to the clamps and need not be removed to change the module batteries. A trigger guard mountable laser sight that is more resistant to shock and requires less ongoing adjustment to maintain light beam and boresight coincidence is obtained.

Abstract: An internally mounted light beam sight suitable for use in automatic pistols and other weapons is provided by replacing the conventional recoil spring guide rod with a hollow tube having substantially the same exterior shape and dimensions, but containing a laser beam generation module within its hollow bore. A collar surrounds the module near a first end. The collar has a part-spherical outer surface which engages a matching-spherical inner surface within the tube so that the angular orientation of the module may be adjusted by relative rotation of the two part-spherical surfaces. The collar is desirably split by one cut-through so that it may be spread apart to slip over an end of the module. The module and collar have an interlocking groove and ridge which retains the collar in place on the module. Transverse adjustment screws in the tube bear on a distal end of the module so that the angular orientation of the module may be varied with respect to the tube.