07-08-2020, 06:17 AM
I have used Loctite red to bed uppers in the past. It can be rebarreled if you heat up the upper and use a one inch dowel to drive out the barrel. I currently use Loctite 642 (green) which I consider to be permanent with and without a shim. Rumor has it that you can heat it up and drive the barrel out but the temperature to do so might weaken the upper.
Having seen a marked increase in accuracy between barrels that were not shimmed and glued in as opposed to those that are I am willing to assemble each one as a permanent assembly. A new upper can be had for as little as $40.00.
Having seen a marked increase in accuracy between barrels that were not shimmed and glued in as opposed to those that are I am willing to assemble each one as a permanent assembly. A new upper can be had for as little as $40.00.
If I agreed with you, then we'd both be wrong.