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 5905-00-706-3985
NSN 5990-01-127-1108
NSN 6645-00-650-3405
NSN 6320-00-360-1744
NSN 6620-01-660-7873
NSN 5930-01-423-2513
NSN 5945-00-279-6554
NSN 6320-01-450-7513
NSN 6130-01-608-4221
NSN 5855-01-468-4996
NSN 6105-01-320-5229
NSN 6650-01-539-6634