01-04-2014, 04:21 AM
explorecaves Wrote:Here is the upper machine drawing. http://www.firearmfiles.com/files/AR15/a...lattop.pdf
EC, Thanks, on page 8 it shows 1.000" +/- .002".
NF, If the tool is 1.000 and the upper is 1.002 that would be a tight slip fit. I'll see if I've got the tools to measure mine properly tomorrow with a mic. I may still be making a tool to check the squareness on the upper and lapping if needed.
