Just ordered a BRT EZtune yesterday in the Gas Port Size: #4 - .0635
It's going on a 10.3" with a gas port size of .070" 100% suppressed.
My form 1 suppressor lives on it full time and it's bored out for .30 cal with low back pressure.
Right now I'm using the Vltor A5-H4 buffer, hoping to keep it a bit cleaner with the BRT gas tube and switch to an A5-H2.
Will report back when installed and shot.
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