DLMS™ Summary National Stock Number 1020-01-451-4591 National Stock Number (NSN) 1020-01-451-4591, or NIIN 014514591, (housing,trigger,breechblock) was assigned December 17, 1997 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs. There are no manufacturer part numbers associated to this NSN. This part number has not been procured by the US Government in over 5 years. This NSN is somewhat common among different platforms, belonging to 4 different weapons systems. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 02, 2005, this NSN's acquisition method was noted as: Not established. Not established. This NSN is assigned to Item Name Code (INC) 31442. [A METALLIC ITEM WHICH COMPLETELY INCLOSES A TRIGGER AND IS ACTUATED BY THE MANIPULATION OF ANOTHER COMPONENT OF THE WEAPON. IT IS MOUNTED ADJACENT TO THE BREECHBLOCK OF THE WEAPON AND RECEIVES ITS IMPETUS FROM ROTATION OF THE BREECHBLOCK.]. 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 1020014514591 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 Jan 01, 2017.