http://www.ebay.com/itm/NEW-OLD-STOC.../191403605184?
Had to drill and tap it to fit.
Its a 10mm 1.25 thread
DSC_1101.jpg
DSC_1102.jpg
The seller only lists one of these at a time. If the link is sold just email him and he'll put another one up for sale. That's what I did.