But the adapter against the square barrel muzzle shoulder is fine? Seems like an easy solution - dont buy temu adaptors?
My relatively limited experience from when i had 1 can i wanted to swap around using the area419 system is that those allegedly superior adapters caused more issues than they solved. I don't swap them around much anymore, i just buy more cans. Just kind of hate for people to think they should buy a new hub interface for every can and a typically heavy/expensive adapter that usually extends cans out further for every barrel.
With a quality barrel and can/direct thread HUB adapter, yes.
With a square shoulder on the barrel, square shoulder on the thread adapter, and a square shoulder on the HUB adapter in the can you now have 3 square shoulders stacked.
Going with a mount using a taper that takes you down to two, one on the barrel and the HUB adapter in the can.
Some companies use a taper on the barrel to get rid of the square shoulders entirely.
Like I said before, a thread adapter will work but there are better ways. I agree, if you’re going to use one buy a quality one.
There are other benefits to running a mount instead of direct thread besides concentricity:
Running a brake style mount will help protect your blast baffle and reduce erosion.
Your barrel crown is better protected when the suppressor is not installed.
Some suppressors will have better performance due to the baffle stack being designed around certain mounts in order to control gas entry into the baffle stack.
If you are going to run a mount I would avoid open tine flash hiders as they can cause accelerated blast baffle wear.