I just picked up my .22 suppressor, and once I saw how ridiculous it looked mounted using the thread extender, I knew it was time to get around to inletting the chassis to accommodate the extra .08" diameter of the suppressor. Right now, it has around .01" of clearance around a .920" 10/22 barrel, but I want it to have about the same amount for my 1.00" diameter suppressor. The thread extender or inletting is necessary because the barrel's shoulder is like 3/8" behind the nose of the chassis.

What is the best way to go about this? I have very little experience with work like this, so is it something that might be better to pass off to a gunsmith? Also, I'm sure that once I cut through the anodizing it'll just be raw aluminum below. Anyone have any suggestions on how to recoat or refinish it so it doesn't look terrible?

Pics of what I'm working with:

Someone with a Mill could open the channel for you, then you would have to decide how to finish, You could use something like Aluminum Black or Aluminihyde , or spend the money to have it cerekoted.

Personally I wouldn't be overly concerned about the anodizing in the barrel channel since that's not an area prone to wear and tear or scratches.