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Suppressors Alternatives to peel washer for TBAC brake?

You say 338 shim set and are referencing 5/8x24 thread pattern shim sets. If your barrel had 18x1 or 1.5 threads or alike you need the 338 shim set from AAC. If you in fact have 5/8x24 threads then both you mentioned are good to go.
 
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I never use the peel washers. They always cause me grief. I have a bunch of extras from the 51T's and other mounts over the years that use color coded shims. I just stack them in there until it's good to go.

I bet an old feeler gauge (one past it's prime maybe) would be excellent for measuring how many of what size shims you'd need, though I've never tried it yet.
 
I never use the peel washers. They always cause me grief. I have a bunch of extras from the 51T's and other mounts over the years that use color coded shims. I just stack them in there until it's good to go.

I bet an old feeler gauge (one past it's prime maybe) would be excellent for measuring how many of what size shims you'd need, though I've never tried it yet.


genius! i wish i would have thought of that
 
I bought a spacer kit from Brownells and they worked fine. That said, I was disappointed in the lack of surface area. They leave a gap and I had to slide a thinner washer in to hold it up/ centered while I tightened.

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