DLMS™ Summary National Stock Number 1015-01-220-1777 National Stock Number (NSN) 1015-01-220-1777, or NIIN 012201777, (breechblock) was assigned November 9, 1985 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 Sep 14, 2002, this NSN's acquisition method was noted as: Suitable for competitive acquisition for the first time. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2. This NSN is assigned to Item Name Code (INC) 22188. [A MOVABLE STEEL BLOCK IN THE MECHANISM OF A BREECHLOADING GUN THAT SEALS THE BREECH OPENING OF THE BARREL DURING FIRING. EXCLUDES BOLT, AUTOMATIC WEAPON.]. 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 1015012201777 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 Feb 01, 2017.