Well I've been to the range 3 times now. still doesn't function properly. first outing was totally my bad, had a rifle buffer spring in there, obviously wont work properly. second time out had the right spring but still had problems, went to the local gun shop and they recommended a heavier buffer, so I bought an H3. 3rd time went the next day, better but still the same problems. gun will not fully cycle despite adjusting the gas block up and down I don't know how many times. I got closer, I was getting good ejection (about 3:30) but then randomly I got one that just fell out of the chamber. So last thing I'm trying is swapping the bolt. it was a questionable one from years ago I had lying around as a backup. its a AR-15 type BCG with and is not full weight. so I borrow a Spikes one from a buddy that's a full weight, high quality BCG. If this doesn't work I'm at a total loss. wish me luck!