DLMS™ Summary National Stock Number 1015-21-907-3073 National Stock Number (NSN) 1015-21-907-3073, or NIIN 219073073, (venturi and muzzle cover) has an unknown assigned date. This NSN replaces 1 stock number, 1015014624266. 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 one supplier. Today, there are no suppliers 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. This NSN is assigned to Item Name Code (INC) 77777. This information was last updated on Jan 16, 2017.