Normally, I tell people shoot before modifying, ammo before accessories, but in this case I make the exception.
There's no need to put up with either situation when the solution is easy and inexpensive. Sharp recoil batters the AR unnecessarily. Recoil will be unnecessarily sharp and become painful after more than a few shots. If not, why fix something which isn't broken ?After spending time and money experimenting, my conclusion is if an AR extracts, ejects and locks back on the last round unsuppressed, it is over gassed for suppressor use. If it is over gassed - a BRT gas tube is a valid solution. Shoot the gun, then shoot it with your chosen suppressor. The BRT tube is great for fixing guns which have issues.