Quote Originally Posted by georgeib View Post
I've used 0.001" thick hardened stainless shim stock wrapped around the barrel extension to produce a "press fit" tight extension to upper fit. The before and after was especially noticeable in the reduction of vertical stringing as the barrel heated up after extensive firing. Easy and inexpensive solution. And much cleaner than Loctite.

The shim stock is available on Amazon in different thicknesses.
He talked about using shim stock prior to the BAT BE, interesting on the anti-tilt carrier screws