I bought a Tapco stock form my Yugo SKS because I wanted a pistol grip and I hoped it would make it lighter. It did not. Turns out the old tractor parts they used to build it made it heavy.
So I gave it to a guy I used to work with because he said he had a lot of experience with the SKS. He had to grind a lot of material off the stock to get it to fit. And without my knowledge or permission, he took a Dremel to the gas tube housing to get it to fit. So now after every three shots, the lever flips up and the housing gets loose.