07-30-2020, 03:18 PM
I have an AA upper with a 20" Shilen barrel, it's been great. I have a 12.5" BA barrel that came with a very small gas port; .050". I wound up drilling it from .050" to .068" (if I remember correctly?) to get it to run right.
If you are considering a BA barrel, I'd suggest calling them to see what port size they are using and if it is compatible with the length of gas system; suppressed vs non-suppressed, etc.
If you are considering a BA barrel, I'd suggest calling them to see what port size they are using and if it is compatible with the length of gas system; suppressed vs non-suppressed, etc.