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Discussion Starter · #1 ·
Im thinking of getting a new upper for my DPMS AR15. It will be M4 style more than likely. Do i need to worry about headspacing or do i just slap it on and start shooting?
 
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Discussion Starter · #2 ·
no worries if you're getting a complete upper.. and honestly, just snag a go-nogo gauge for a few bucks and use it if you're worried.
 
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Discussion Starter · #3 ·
So in the upper is where the headspacing is adjusted then? Im not that worried, ive shot plenty of ar15 and m16s but ive never replaced a complete upper. Just wanted to be on the safe side. Thanks.
 
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Discussion Starter · #4 ·
Most complete uppers from a quality manufacturer are test fired and head spaced from the factory.





zak
 
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Discussion Starter · #5 ·
A complete upper (including bolt assembly) from DPMS will be properly tested at the factory, including a test fire. You won't have anything to worry about.
 
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Discussion Starter · #6 ·
Specifically, the AR is headspaced at the barrel, it is permanent, and cannot be adjusted. In general, unless someone screws up real bad, a new bolt and a new barrel will automatically be headspaced.
 
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Discussion Starter · #7 ·
Cool sounds good, thanks for the info guys. What about trigger? My trigger sucks something awful. I just want a plane jane trigger with about 4 pounds of pull, can any one recommend a specific trigger from some where?
 
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Discussion Starter · #8 ·
Specifically, the AR is headspaced at the barrel, it is permanent, and cannot be adjusted. In general, unless someone screws up real bad, a new bolt and a new barrel will automatically be headspaced.
I was pretty sure that was the case, and the only folks I see with the gauge are guys who are constantly tweaking their uber benchrest long range shooters.
 
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Discussion Starter · #9 ·
Cool sounds good, thanks for the info guys. What about trigger? My trigger sucks something awful. I just want a plane jane trigger with about 4 pounds of pull, can any one recommend a specific trigger from some where?
If you're the DIY type, you can always just get a JP spring kit and smooth out the contact points on the trigger group.
 
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Discussion Starter · #11 ·
If you replace your barrel, replace your bolt.

New barrel + New Bolt = correct headspace
New barrel + old bolt = questionable head space

Try to keep the same bolt with the same barrel 100% of the time. No swapping bolts in and out of different weapons.

Hardwarz
 
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