There is currently a used M9A1 on ebay.
http://cgi.ebay.com/Super-rare-M9A1-...QQcmdZViewItem
The seller claims it is an "ex-us army issue" bayonet. I wrote to tell him that the Army never purchased or issued any M9A1 bayonets. He replied that he didn't know what I was looking for, but he gets his information from the quarterbore.net forums. I wrote back and made it a little more clear that he should edit his item description and remove the army issue reference. Hopefully he will be an honest seller and correct this error.
I love it when people cut and paste bits of information from the website and use it in item descriptions even if it doesn't apply to the item they're selling. I guess we should all feel honored that people are recognizing this site as the premier source for M9 information.