Quote History Quoted:What rail did you use? Basically what I’m saying is the barrel is too fat for my barrel nut so I can’t fit the barrel nut over the barrel
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Ok, that was what I thought your problem was. It's just that I've never seen a barrel nut that wouldn't go over any barrel I've ever used, and that numbers quite a few. What rail are you trying to use?
As for the rail I used, it is a polymer model made by AC-Unity that is used by the Bosnian police on their 9mm, Glock mag, subgun. It is extremely light, but strong, and transfers no heat when firing. They are not supplied with a barrel nut, but I found one from Midwest Gun Works made by CMMG for one of their RKM rails. It works perfectly. The combination only costs about $70 with shipping.
https://www.robertrtg.com/store/pc/AC-SMG-AR-HANDGUARD-AC-UNITY-395p7296.htm
https://www.midwestgunworks.com/page/mgwi/prod/55da244
Oh, and you can add the 30 rd. AC-Unity mag sold by RTG to the list of mags I tried. They worked without any issues, also, and are very inexpensive.
https://www.robertrtg.com/store/pc/GLOCK-9MM-30RD-WINDOW-MAGAZINE-AC-UNITY-14p7411.htm
If Midwest Gun Works is out of the CMMG barrel nut, Optics Planet has them, too.
With my trip to the range this morning, I can now add another couple rounds to the list of ammo that feeds perfectly with this barrel. Hornady 115gr Critical Defense and Hornady 135gr Critical Duty, both std pressure and +P, fed without a misstep.