When I first got my Saiga 12, I started having some issues my buddy knew a local gunsmith (back in MN) that loved tinkering with Saigas. He charged me a whole $50 and I have not had an issue. As I don't know exactly what was done, it seemed he "tuned" it up. I have not heard of a lot of issues with other people and their Saiga 12, but I guess there seems to be bad batches..