DLMS™ Summary National Stock Number 1020-00-140-3644 National Stock Number (NSN) 1020-00-140-3644, or NIIN 001403644, (modification kit,gun,weapon) was assigned July 30, 1973 in the Federal Logistics Information System (FLIS). NIIN 001403644 was cancelled on November 21, 2002, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. 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 unique to one weapons system. This NSN is assigned to Item Name Code (INC) 39726. [AN ITEM OR COLLECTIVE ITEMS EMPLOYED TO MODIFY WEAP0NS.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 1020001403644 does not contain precious metals. This information was last updated on Jan 20, 2017.