Bren 2 MS, USA Version - is here per CZ-USA

[wolffie]

I'd like to know what their definition of "run fine" is. Overgassed rifles that launch spent cases in to orbit and blow back a ton of gas to your face run fine. However, that's not ideal.

It is a piston gun. So gas in the face will likely be the result of gas through the chamber. Not the gas system itself. I like the idea of a smaller port/suppressor setting to calm down the action. That said, I haven’t fired my 11” pistol. Nor have I even put a qd Mount on it... so I can’t speak as to how the suppressor affects the cycling.

It would probably be possible to modify the gas plug to get what you want.