I traded for one years ago, and it was a pretty good deal for me, anyway.
That said, yes, it is cheaply built, and ugly as a toad.
It was used, of course, and someone had done some work on it to make it function. Which it does, I have never had a jam or any sort of malfunction.
However, they had opened up the chamber, and now the brass comes out lookin' sorta like a little barrel. As in beer barrel. The other thing, which I guess I shouldn't really call a problem, is that the ejected cases are thrown some 30 or more feet to the right. So, if you are a reloader, as I am, not only is the brass getting worked really hard, but it's damn near impossible to find.
The sights are less than rudimentary, the trigger pull is awful.
But it does go bang every time you pull the trigger, plus you can sorta "bump-fire" it if you hold it just a little off your shoulder, obtaining a nearly full auto rate of fire.
Not one of my favorite guns, but I wouldn't sell it, neither!
Grizzle Bear