Parts for a 7.62 Super Bolt

[Hektor]

[ATTACH=CONFIG]689[/ATTACH][ATTACH=CONFIG]690[/ATTACH]I have a Shilen barreled 6 mm RAT upper and today the extractor broke. I am sure it is an ITS Super Bolt. I am looking for the part but I was wondering how many venders might have it and who is the quickest to deal with. I will probably buy another bolt for a spare. The barrel was chambered with a reamer from Dave Kiff at PTG.
Thanks.