*** Not sure of the legality so YMMV *** *** This is for informational purposes only ***
Metal Folder for SKSA Butler Creek metal folding stock for a Ruger 10/22 (I imagine Butler Creeks for other models would work as well) + the cheapie plastic SKS folder (Advanced or something like that) + an hour or less of work = one nice SKS with a metal folding stock.
It requires a dremel and a couple of fat wood screws. The folding end is cut off the cheapie SKS folding stock. The area is dremeled or ground smooth and to the correct angle for the Butler Creek. I beleive the level cut is the correct angle, but I can't remember. The metal folding part is used from the Butler Creek stock. Small, shallow pilot holes are drilled in the cheapie SKS plastic stock and the screws are heated a little to assist in threading them in.
The new stock holds up great. No loosening or anything after 1000's of rounds. It is usable in the folded position as well. Accuracy, when compared to the original wood stock, does not suffer when the stock is used in the extended position. If done correctly, the stock looks factory made that way.
heIt might even be possible to do this with the wood SKS stock and a Butler Creek, but I never thought about it.
Edited to add: It has been a long while since I thought about the metal folder for the SKS. The Butler Creek mount might fit inside the Cheapie SKS stock folder mount with some dremel work instead of cutting it off level. Then a hole is made to match up with the Butler Creek button to collapse the stock. If I saw the two together, I would remember. All I know is that it ends up very solid, looks nice, and does work well.
(If this post is in violation of anything, please delete it. AFAIK, it shouldn't be, but I am no legal expert.)