Odd. I just ordered (and received) three sets from them. Brownells brand. It's possible the company that makes the rings you ordered are not registered for export.
You could try wolverine.
It was the brownells brand rings, they removed the 3 pack from one order and the "singles" from another, with "not available for export" as reason. 078-000-099WB It's frustrating because they don't have the red export restriction in the checkout (many items do), and now I hear you got a set. Argggh![]()
I've also seen these included in repair kits such as the DPMS Ultimate Repair Kit offered by CGN Sponsor CTCS, though it happened to show "out of stock" as I was about to go and order one of these kits last week...
Hope this helps...



























