Yesterday, I picked my new left hand GC7 topsingle from Monsoor's in LaCrosse, WI. In the box is a nice GC7 catalog. It has quite a bit more information than the SKB website. I scanned a picture of the unsingle version and can e-mail it to anyone interested. Remove the xxx's from the e-mail address shown.
All the barrels in the 85TSS/85TTR series will "fit" the GC7s and vice-versa. When I say "fit" that means with some "fitting" involved. Have done two "fits" myself and both were fairly easy; but that is not to say all will be.
dkuser the price you heard from Redgreen is correct. I coach Jr./Sr. High School team in Nebraska and have purchased the new GC7 top single from Guns Unlimited in Omaha Nebraska, give them a call and ask for Dan Goodsell 402-339-0771
I bought my barrels new from Hi-Grade Shooters Supply at a great price! (Lucky to find them). I believe Mike @ Silver Dollar Firearms can get them for you as well.
dkusner - I will fit my own and others I know locally. I'm not a g'smith by trade, but a machinist. Both "fits" I have done were by judicious use of fine Swiss files, diamond hones, and lapping. Other fits may need a little more.