I have never shot my bren with a suppressor. What happens with the current two settings while shooting suppressed?
You will just have an increase in felt recoil. Think of it like putting your Bren on the ?dirty? setting, or shooting an overgassed 5.56 AK. Short term/low round count it will not cause any harm. However, CZ does not recommend doing this as it is much harder on the internals. If you shoot suppressed a lot, you could experience what some SCAR owners are now dealing with. But we?re talking about thousands of suppressed rounds.
If you?re on Insta, look up the user ?pmca8ctfvba5up? and check out the pics of his destroyed SCAR bolt carrier after 5-7k suppressed rounds.
That being said...keep in mind that the Bren was originally designed to be a 308, and therefor should be able to withstand more abuse. But that doesn?t always mean you should push the limits.