National Stock Number
1240-01-666-5051
National Stock Number (NSN) 1240-01-666-5051, or NIIN 016665051, (sight,bore,optical) was assigned September 9, 2017 in the Federal Logistics Information System (FLIS). NIIN 016665051 was cancelled on October 24, 2017, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 22601. [A TELESCOPIC DEVICE WHICH UTILIZES A BORESIGHTING RETICLE, USED TO ALIGN THE AXIS OF A WEAPON BORE WITH A TARGET. IT IS SECURED TO THE EXTERIOR OR INTERIOR OF A WEAPON BARREL OR TUBE. IT INCLUDES A MOUNT, TELESCOPE WITH A STRAP AND CLAMP ASSEMBLY FOR EXTERIOR MOUNTING, OR AN EXPANSION SLEEVE ADAPTER FOR INTERNAL MOUNTING. EXCLUDES:SIGHT, BORE, BREECH; SIGHT, BORE, MUZZLE AND SIGHT, BORE, OPEN.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 1240016665051 does not contain precious metals.
This information was last updated on Aug 01, 2025.