Well, Doc, I guess it could be, if you wanted it to.
The point I was trying to make is that there's only one outfit I know of that's making the skeleton rig spring clips and selling them ready-made. That's River Junction Trade Co. in MacGregor IA. Problem is, they're just right for an SAA or clone, but are not the right dimension for some of the other guns. The NA Russian requires a deeper and narrower curve. I'm sure that's also true for the Schofield and other No. 3 Smiths. I would think the smaller frame of the Lightning would also require a different (smaller) shape than the standard SAA.
I just made up the one for my Russian. I hafta say that I don't have any plans to make these up and/or sell'em, but will be happy to share any and all info that I can for those who want to do it themselves. It's kind of a pain in the butt, but it's not really that hard to do. If I can, anybody with some perseverance, a vise or two, rubber mallets, pliers and a fairly even temper can do it , too.