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1/25/2018 7:38:29 AM
Posted: 1/12/2006 6:29:05 PM EST
Headspacing… All our barrel assemblies are headspaced at the factory and are shipped ready for assembly and use. Barrel assemblies can be ordered with either a stepped, crowned muzzle (for Post-Ban rifles) or a threaded muzzle for attachment of a flash suppressor or muzzle brake. BATF rulings permit permanent factory installation of muzzle brakes on certain Post-Ban barrels if overall length equals at least 16". Ask your Bushmaster representative about the variety of muzzle brake options available for Post-Ban barrels

T­his is off the Bushmaster page and my quetion is if I take the bbl off , do i need to have to have the headspacing redone? I have a bushmaster M4 that I am painting. What do you think ? I dont realy know a lot about the bbl on off procedure.
Link Posted: 1/12/2006 7:19:26 PM EST
Removing (and reinstalling??) your barrel will have no effect on headspace as long as you keep the same bolt with that barrel. It is those 2 items alone that determine headspace, not the upper receiver onto which you attach the barrel.
Link Posted: 1/12/2006 7:23:18 PM EST
Ya its only a remove and reinstall. Thanks I dont want to fuc up my gun.
Link Posted: 1/13/2006 2:33:39 AM EST
headspacing is not adjustable or easily changed on the ar
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