Sound suppressor questions "gas face"

[Variable]

I think Noveski makes an adjustable gas block to handle this, expensive, but I've read that it works well to handle this issue.

That would help somewhat, but as long as you a firing a semiautomatic you will still encounter gas. Even if you were using an externally vented piston system a healthy dose exits the chamber upon extraction. The suppressor is in effect a gas reservoir that vents through the chamber as well as out the muzzle.

I'd would like to try a switchblock sometime. I want something like it for my 10.5" upper. Ideally I wish the switchblock would have children with a YHM flip up gas block.