I'm in the middle of installing and indexing AAC brake/suppressor mounts on three AI rifles and made myself a cheat sheet to help in picking the correct shims. While I was at it I figured I'd extend the table to cover some other "common" thread types. I discovered that M18x1.5 is the finest common thread out there which isn't helpful when trying to time a brake. I have shims with 0.001", 0.002" and 0.005" thicknesses and since a 0.001" shim rotates the brake almost 14°, the alignment can be off by as much as 7°. Anyway, maybe someone else will find this table helpful or at least educational. If I messed up the math please let me know.