AR15 Uppers Without Bolt Assy?

DaveGP said:
I've seen 2 broken ones - and they were from brand-name rifles. Not exactly confidence inspiring!
Click to expand...

The bolt in my Armalite broke after aprx 1200 rds. Replaced by the dealer, no charge. New one hasn't broke yet.
 
Hmm,

There is a Mean Time Between Failure on the Bolt -- the spec was intially for 5k - however in practice it is well over 15k for rifles and 5-10 on carbines depending upon how they are used.

This is for mil weapons fired in a manner not found in civilian firearms.


I don't keep spare bolts in my M4 overseas - why would one do it here in peacetime?
 
AR Upper

It's logical to keep the bolt assembly. If you look in the Shotgun News you will find uppers for sale and 99.9% don't include the bolt assembly.
New uppers don't come with the bolt, that's a separate item.

OK if I wanted to change the upper in my AR with a different barrel and receiver why wouldn't I keep the bolt assembly? The seller keeps the bolt assembly because he changed the barrel and receiver with a new style and twist and didn't need a new bolt. I have probably had about 15 or 20 AR's over the years and many uppers, when I bought an upper I never got a bolt with it nor do I expect to get one.
Think about it.
 
I figure that if a bolt is used in one rifle for a while it would wear into the barrel extension and basically fit it. If you took a really old bolt that had been through a pile of uppers it might be out of spec with the new barrel. Though I'm sure that all you bolt traders check the headspace of your new upper when you throw the old bolt in.:D
 
I would see no reason to sell the upper without the bolt carrier/bolt assembly. I figure that people trying to pull this off just want to squeeze an extra few bucks out of their investment.
 
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