Used for the m992 or m993 ranger sight w/chevron reticle
No other part numbers with same form, fit, and function found.
NSN 5925-01-379-7734
NSN 5915-01-107-8596
NSN 5910-00-429-2601
NSN 6130-01-385-1479
NSN 5855-01-279-9938
NSN 6130-01-027-0762
NSN 6610-01-058-2366
NSN 6320-01-152-8873
NSN 5835-00-083-6557
NSN 4140-01-167-7574
NSN 5950-01-076-7515
NSN 6240-00-389-4822