BIS is revising paragraph (d) to revise the explanation of your composition of an Export Management Classification Variety (ECCN), Particularly specializing in the indicating of the digits while in the ECCN. The 500 sequence is at this time being used to deal with firearms during the 0x5xx ECCNs and “Spacecraft” https://building-inspector-sydney92357.ampedpages.com/detailed-notes-on-building-inspection-56948183