I've had my first Norenco SKS since I was 16 years old. I've had every different type of mag and stock you can think of on it. The best I've had as far as mags that don't FTF on me are the promag detachable 20rnd mags. As far as fixed go I had a fixed 20rd on it a few years ago and it took a lot of creative gun smithing with a dremel to get it to fit right. It was a big pain in the a**. The spring it came with was too strong to easily feed with a stripper clip. And then a year or so after I installed it it failed completely and would just push every round up and out as it pleased. I took it off and threw it in the trash were it belongs.
The government cannot give to one person what it does not first take from another.