Two for more different types of items having a common mounting or mounted on each other which together form a portion of a light signal receiver-transmitter.
NSN 5915-01-569-5655
NSN 6320-01-021-6633
NSN 5999-01-134-6113
NSN 6610-00-100-1195
NSN 5905-00-520-7931
NSN 5920-01-474-0258
NSN 2925-01-218-5556
NSN 6145-01-024-3915
NSN 6610-00-754-5122
NSN 5999-00-578-9562
NSN 5999-00-847-8940
NSN 5835-01-555-8963