10-09-2019, 11:38 PM
If you wanted to avoid heating the upper for assembly loctite has the advantage there. Otherwise either method works fine. If the fit was super loose I'd look into using actual shim stock though.
https://www.ar15.com/forums/Precision-Ri...19/#i93694
https://www.ar15.com/forums/Precision-Ri...19/#i93694

