As I said on the other thread, I worked in a gun shop that sold a lot of them, and about 75% came back for repairs after being fired only a few times. Some of the trouble was due to the customer (usually trying to drive out the breech block pin, which will destroy the frame), but most was extractor failure, and/or broken parts. When the 49R repeater came out, the boss wisely chose not to stock them.
Jim