Quote Originally Posted by Joelski View Post
I would think that somebody would do some research into DLC, PVD, QPQ, etc.
Here is one that has DLC "inside and out"

https://www.primaryweapons.com/bde-22-suppressor/

And another...

https://maximdefense.com/product/dsx-d-suppressor/

Also there apparently is more than one 'variant' of DLC coatings.

https://www.upt-usa.com/explore/dlc-coating-firearms