are all AR15 bolts standard? or is there a .223REM and a 5.56 bolt?
Posted: 5/15/2006 2:52:55 PM EDT
[#1]
only differences i've seen is the spring set up with the extractor piece. dont know which one is which. i had two little springs in my set up in the army and what i use now in my LMT. i have seen my friends bolts with single spring nub.
