DLMS™ Summary National Stock Number 1015-01-463-4591 National Stock Number (NSN) 1015-01-463-4591, or NIIN 014634591, (base,rear sight) was assigned March 23, 1999 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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 2 suppliers. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts. This part number has not been procured by the US Government in over 5 years. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jul 01, 2020, this NSN's acquisition method was noted as: Not established. Not established. This NSN is assigned to Item Name Code (INC) 50284. [AN ITEM SPECIFICALLY DESIGNED AS A FOUNDATION OR PART UPON WHICH ASSOCIATED PARTS, SUCH AS CROSS BLADE, SIGHT LEAF, OR APERTURE, FOR A GUNSIGHT ARE MOUNTED. IT IS ATTACHED TO THE RECEIVER OR GUN BARREL AND ESSENTIAL TO A CARBINE, MACHINE GUN, PISTOL, RIFLE OR THE LIKE WHEN AIMING.]. 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 1015014634591 does not contain precious metals. This NSN is associated to Schedule B 9305913010: parts and accessories of military artillery weapons of 9301.11 or 9301.19. The Schedule B End Use is listed as tanks, artillery, missiles, rockets, guns and ammunition. NAICS classification category 332994: small arms, ordnance, and ordnance accessories manufacturing. This information was last updated on Apr 01, 2017.