Stove pipes. The bottom of the optic mount is beat up. I have put an aftec extractor in it, tuned the mags, changed brass and work on loads. I haven't changed the ejector, I have been looking into that part a little more. But at this point its kind of the principle that the gun won't function I have been sinking money into a new gun and the company that made it won't contact me back or anything.