I found one! I hit my buddy up who is a big Sig fan...he says yeah I have a few laying around!...who has a few discontinued stocks laying around?! Good stuff.
In case you were wondering this will be going on a very early Sig 556ER with all Swiss guts. Gonna be a cool project when shes done! I will post pics. Mybe even do a mini write up with all the info I've farmed from 10 year old forum archives.