I ran the NSN on fedlog and came up with the following.
Hope it helps.
>Supplier Data Response for NSN 1005-00-152-6582
>Item Name: SIGHT RING ASSEMBLY
>
>CAGE Code: 80064 Status: A Type: A CAO: ADP:
>
>Company Name and Address:
>NAVAL SHIP SYSTEMS COMMAND
>
>
>SSG Paul D. Carrier
>Readiness NCO
>Detachment 2 Company B 145 Support Battalion
>Camp Withycombe, Clackamas, OR
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