12-20-2013, 07:38 PM
LRRPF52 Wrote:Yeah, I just checked an Aero that I am using for another forum member's upper, and it is almost dead-on. Spin the upper on the tool with a bright light in the background and look carefully at the edges. You can see then if it is out or not, or just use Dykem fluid on the receiver face, let it dry, then skim the face with the tool in a drill and see what happens.
Did this and couldn't see any light around the edges. I am used to using this method with my optics assembly background so I have a keen eye for any gaps. I will double check them again when I get ready to mount the barrel.