I'm considering keeping some spare parts on hand. How interchangeable are the parts in the upper assembly (e.g., bolt carrier, bolt carrier key, bolt assembly, firing pin)?
Thanks in advance.
Posted: 9/24/2005 5:14:04 PM EDT
[#1]
all parts in the upper should be fully interchangeable
Posted: 9/24/2005 5:17:21 PM EDT
[#2]
Pretty much everything is interchangeable, with the exception of bolts. Some guys do it, the military manuals warn against it, and I do not practice it. Unless you have the gauges for checking headspace. New barrel=new bolt.
Posted: 9/24/2005 5:19:45 PM EDT
[#3]
just get some head space guages and you should be set with everything including bolts
Posted: 9/24/2005 5:33:13 PM EDT
[#4]
even with new bolts and barrels the HS needs to be checked.
