01-18-2018, 04:17 AM
bj139 Wrote:Most people buy the group buy bolt specified at .136" and buy a barrel with the same spec assemble it and shoot and everything works fine.
I don't think there is an epidemic of mil spec parts being out of spec. I think the manufacturers do a very good job.
Agreed, it's largely a non issue. But I wouldn't feel comfortable suggesting someone NOT check headspace or buy a factory checked set because there is some risk however slight. I actually had a WMD bolt fail the no-go gauge in a ballistic advantage .223 wylde barrel, which is interesting because WMD's president said they use BA barrels, however not with a wylde chamber. Maybe it wouldn't be a problem, but I certainly don't use that bolt in that barrel (the bolt headspace was fine in my m4 contour 5.56 barrel though).

