Excellent info as usual, Sniper!
I will admit I have not checked headspace on my builds.
(Since it's rarely a problem with quality components plus I do have matching brand name bolts/uppers.) I do measure the fired cases as a precaution. If I stumbled across some gauges I would check of course.
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
US Army 1966-69, VFW Life Member, Retired Geek
Last edited by Quentin; 08-23-2011 at 02:04 AM.