I was hoping someone would be able to help me here as I haven't been able to find any solutions that have helped. I have a Colt style 9mm AR I built that has had a lot of feeding issues since I built it, I have gotten it down to about 1-2 malfunctions per magazine but only load 28 out of 32 any more and its almost guaranteed to have a failure after the first round is fired, I cannot get through a magazine without failure. It is having failures to feed, double feeds and some weird ones that send rounds above the bolt. I also have a mag that has a Taylor Freelance extension that will feed nothing out of it. Any help would be greatly appreciated. Parts list and loads are listed below.
CMMG MK9 lower
Gibbz Arms side charge upper
Odin Works ultra light barrel
Taccom Extreme short stroke bolt
Kaw Valley Precision PCC XP buffer spring
Odin Works 9mm adjustable buffer(have tried each configuration with no difference in reliability)
Have tried a standard CMMG 9mm buffer(no difference from the Odin buffer)
Hiperfire Hipertouch Eclipse trigger
Metal Form Colt SMG mags with Taylor Freelance springs and followers
The last couple loads I have been trying were 115gr plated round nose with either Win 244 or VV 3N38
I have tried loads with 115,124, and 147 gr bullets with Win 244, CFE Pistol, VV 3N38, and Titegroup as well as multiple factory loads and have not seen any difference in reliability as a result of ammunition.