never been down the road of suppressing anything and unlike my firearm purchases over the years, I really want to get this right from the start...

I read just about everywhere that most suppressors for 223/556 are made for barrels OVER 10.4inches... but mine current setup is 9inches and ultimately would prefer a dissent with 6.5inch barrel.
I understand the loss for 223 / 556 but even at 6inch barrel, it is still more powerful than a pdw in 9mm by at least 100 FPE.
problem is that it is TOO LOUD.

So - can you suppress an AR pistol with 6.5inch to 9inch barrel without ruining/ degrading your suppressor baffles prematurely? Is there one that does this?

I'm not wanting this setup for long range, this would be for home defense and well inside 50yds.

At that point, do you just skip it and go 147gr 9mm suppressed PDW to keep the noise down and take the 100ish-FPE loss?

My only calibers are 223/556, 9mm - so 300blk, 5.7 etc is not something I want to entertain, dont want to start adding another caliber.

Anyone been down this rabbit hole?