This is eyecup adapter non-threaded
NSN 5905-00-453-0568
NSN 5965-00-239-3471
NSN 6320-01-227-2648
NSN 6650-01-353-9299
NSN 6610-01-633-8931
NSN 6240-00-170-5302
NSN 5999-00-147-9978
NSN 6645-01-045-4088
NSN 6620-01-327-7273
NSN 6240-01-523-6064
NSN 6135-01-026-9960
NSN 7035-00-946-2642
Last Updated: 05/04/2024