I'd suggest going to one of the dedicated suppressor sights for the best and most up to date information.
Just picking up my 2nd Elite Iron Bravo can tomorrow. Have one dedicated for a .223 precision rifle the 2nd for use on my 6.5 x 47 L and a .308 bolt gun.
The Elite Iron cans seem to REALLY hold up. I have seen a few real torture tests and the cans survive the abuse.
I have a Yankee Hill Machine SS can I run on AR's and an AAC on my HK Tactical .45 acp. Both have given me exceptional service for several years now. I had an issue once with a YHM adapter, they REALLY stepped up to alleviate the issue, sent a replacement adapter out ASAP, next day Air on their dime. I really like YHM. But have to say my new Elite Iron bravo can is MUCH quieter.
I 2nd the suggestion to go to an adjustable gas block on the AR's.
Cans really ruin a guy. They soak up recoil and the report goes from muffs required, high powered rifle stuff, down to .22 rimfire type noise.
I find them very convenient for coyotes, badgers, skunks, etc here on the Ranch as I can dispatch a pest with my AR or the .223 bolt gun without bothering any of the other animals or my neighbors.