DLMS™ Summary National Stock Number 1005-00-222-9449 National Stock Number (NSN) 1005-00-222-9449, or NIIN 002229449, (gun,automatic,20 millimeter) was assigned October 7, 1970 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. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on May 14, 2002, this NSN's acquisition method was noted as: Suitable for competitive acquisition for the first time. (Potential sources shall include dealers/distributors.) This part requires special test and/or inspection facilities to determine and maintain ultraprecision quality for its function or system integrity. Substantiation and inspection of the precision or quality cannot be accomplished without such specialized test or inspection facilities. Valid AMCs: 1, 2, 3, 4 and 5. This NSN is assigned to Item Name Code (INC) 21596. [A COMPLETE ASSEMBLY CONSISTING OF A BARREL, BREECH, AND FIRING MECHANISMS DESIGNED TO BE FIRED FROM A MOUNT ON A SELF-PROPELLED VEHICLE.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 1005002229449 contains an unknown precious metal. This NSN is associated to Schedule B 9301909090: military weapons, other than arms of heading 9307, nesoi. The Schedule B End Use is listed as tanks, artillery, missiles, rockets, guns and ammunition. This information was last updated on Oct 01, 2016.