08-18-2020, 10:59 AM
Square the face, shim with stainless shim stock if needed , loctite 620 or such has been my go to way on every upper for awhile now.
A small difference in some and bigger then others.
But Im ocd and now look at Everything in a build.
A small difference in some and bigger then others.
But Im ocd and now look at Everything in a build.

