DLMS™ Summary National Stock Number 1005-01-537-3769 National Stock Number (NSN) 1005-01-537-3769, or NIIN 015373769, (lock,breech,machine gun) was assigned February 3, 2006 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs. There are 2 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers 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. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jul 18, 2014, this NSN's acquisition method was noted as: Not established. Not established. This NSN is assigned to Item Name Code (INC) 62372. [AN ITEM WHICH IS AN INTEGRAL PART OF THE BARREL EXTENSION GROUP OF A WEAPON. IT IS DESIGNED TO PREVENT THE LOSS OF GAS PRESSURE, BY LOCKING THE BARREL EXTENSION TO THE BOLT DURING FIRING.]. 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 1005015373769 does not contain precious metals. This NSN is associated to Schedule B 9305911000: parts and accessories for military rifles of heading 9301. 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 Feb 01, 2017.