I have a Superlative Arms gas block on an 11.5" DI AR that I use exclusively suppressed with a Dead Air Sandman K silencer. It's not used for anything other than the range and occasional 2-gun competition, but it works really well to reduce gas to the face and tune recoil down to a minimum with a standard spring and carbine buffer. I've gone with the understanding that the "adjustable" part of the gas block is supposed to be tuned and to leave it, rather than something that's constantly messed with after each range trip. That being said, I have shot hundreds of rounds then messed with the detent adjuster and it clicks just fine and reliably returns to the gas setting I configured it to originally. Using steel cased .223 Tula or Wolf I get 4-5 o'clock ejection patterns and with .223 Wolf Gold I get 2-3 o'clock ejection.