Head Spacing

spectra · Dec 29, 2012

Ok am putting together a 308 AR and need to check the head space on it. Can anyone help me out? I bought the BCG from a company in California and the barrel from Curts. Well Curts does not have ahead spacing tool for 308. So if anyone can help me out or point me in the right direction that would be great :s0155:

Thanks!

Creeper · Dec 31, 2012

"Reamer Rentals" will rent you a set of Go/No-Go headspace gauges for $5.00.

C

iamme · Dec 31, 2012

Drop me a PM I should still have 308 go/no-go gauges here I can let you borrow. Just know with AR's there really is no setting headspace. The shops either machined them properly or not. Using QUALITY and NEW parts you should have no issue.

deadshot2 · Dec 31, 2012

iamme said:
Just know with AR's there really is no setting headspace.

Oh, they can have the headspace set. It's just a real long and complicated process. For all practical purposes the barrel extension is no different than the receiver in a bolt action rifle. It's just with AR's the gas port needs to be "timed" so the gas block, gas tube, and sight, are in alignment.

FWIW, the general consensus is that a well machined and properly assembled AR type barrel usually only needs a new bolt to correct any excessive headspace issues.

iamme · Dec 31, 2012

deadshot2 said:
Oh, they can have the headspace set. It's just a real long and complicated process. For all practical purposes the barrel extension is no different than the receiver in a bolt action rifle. It's just with AR's the gas port needs to be "timed" so the gas block, gas tube, and sight, are in alignment.

FWIW, the general consensus is that a well machined and properly assembled AR type barrel usually only needs a new bolt to correct any excessive headspace issues.

See I still stand behind my statement!! lol.