I recently purchased an ambidextrous magazine release for my AR service rifle so that I could shoot it in competition left handed. Up until this afternoon, the listing was available on eBay. After the part arrived this afternoon, I went to post feedback, and eBay politely posted that they had to remove the listing and that I didn't have to complete the sale. I have never seen something like this before.

When I went to see if eBay had removed all parts usable on an AR platform, they were still there. Even the seller still had active auctions. What added to the confusion is that AR ambidextrous magazine releases were still available for active auctions.

Can anyone offer an idea as to what is going on?

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Judge control not gun control!