Help ID Manufacturer Mini 14 stripper guide

Want to see if someone in the group can ID the maker of this Mini-14 stripper clip guide. I have found the abundant Cogburn Arsenal guides but not this one, My Google Foo is usually pretty strong and Im leaning towards the now defunct Federal Ordnance company, but can find no pics on line to confirm this, just mention of these on various Ruger forums. It is machined from aluminum extrusion and has no markings. it functions very nicely

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