I have a Hi-Point 45 carbine. It has never jammed on me. Function has never been a problem.
Accuracy is another matter. I don't consider 6" groups @ 50 yds good. Maybe it is just me but I am generally a better shot than that. This is with a scope.
Could be the cheap scope or mount, I don't know. I got so disgusted with it I put it up and didn't mess with it thru hunting season. Plan to give it one more try and if the groups don't tighten up it will be sold.