It's headspacing of the barrel and extention that is most important, once that is done then it doesn't matter what happens after you mount it to a receiver, you can't change the headspacing, correct?
Posted: 12/28/2002 12:52:14 PM EDT
[#1]
I assume you are refering to an AR.
Posted: 12/28/2002 2:12:31 PM EDT
[#2]
Correct. Headspace on AR-type rifles happens between the bolt and the barrel extension, and can be measured without an upper receiver at all. The upper receiver has absolutely no impact on headspace.
