Ar bolt

[bodiebill]

Misplaced the bolt from a new NiB (Nickle Boron) complete carrier and bolt assy
Don't ask how--it is somewhere hidden from all my searches.
Q. Where can I get a replacement bolt body or bolt assy? NiB preferred.
Any problems with headspace ?

[bksa]

http://www.midwayusa.com/product/228289/ar-stoner-enhanced-bolt-assembly-ar-15-223-remington-nickel-boron-plated

[Nathan Krynn]

When you buy the bolt pick up a set of "go, no-go" gauges, I like a "field" gauge as well. Remove the ejector. Then check head space.

A "go" should go into battery.

A "no-go" will only go into battery when it is close to a bad head space. Doesn't mean you have a problem, it means its time to test with a "field"

A "field" gauge will only go into battery if the head space is bad. This is when you have a huge problem.

I can tell you with mil-spec parts I have found like 4 barrel/bolt combos out of head space in all my years building. However you have a NiB coated bolt so depending on that companies manufacturing and coating requirements you never know till you test them. If the "go" won't close then you can have the bolt fixed which is normally the issue with coated bolts.

[ar15barrels]

Any problems with headspace ?

If the bolts are different, then there could be a headspace problem.
The way you find out is to check it with the proper gauges.