I've got a shoulder stock for mine, a repro from China pre-Covid. Needed a bit of work on the connector. I had one prior to buying it, but lost it and recently found it...now I have two. I also bought a leather holster, also from Communist China, very good quality with a little saddle soap.

I would strongly advise to check the barrel for rifling. Mine had no rifling, all shot out. A lot of them came from China, where they were used a lot. I had mine relined, which cost $300, IIRC.