05-02-2020, 01:50 AM
(This post was last modified: 05-02-2020, 08:42 PM by lazyengineer.)
Upper had been lapped.
To date, I have not been impressed or seen meaningful improvement from lapping. For me, in several guns, it's pretty much been a waste of time with no positive benefit.
To date, I have not been impressed or seen meaningful improvement from lapping. For me, in several guns, it's pretty much been a waste of time with no positive benefit.

