As soon as I get the build back into my hands I'll swap a few things and see where I'm at. Hopefully it'll be as easy as swapping the bcg or buffer. But I'll keep you guys posted. Thanks for the help.
The port on my Faxon 16" mid is .081"Faxon created their gas port diameters by testing using a standard carbine. Specifically, we used a dry manganese phosphate carrier, an H2 buffer, and a military-specification spring. We then test-fired the weapon to ensure that it locked back with no lubrication and opened the port a bit further to account for adverse conditions.
Well done !After range update:
I ran 10rnds of AE 55gr with C158 BCG w/ Carbine buffer/Spring and it ran perfectly. Swapped out to the H2 and ran another 10rnds perfectly. It's actually a little over-gassed now I would say. I ran a mixed mag of AE 55gr, PMC 55gr, Fed 62gr, and super old Norinco 55gr. Not one hiccup.
I forgot to try the NiB BCG but my buddy prefers the nitride one anyways.
Thanks for all the help and suggestions.