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Posted: 10/31/2017 5:42:27 PM EDT
Before I order anything I want to be sure that I can install and use a DPMS style barrel and bcg in my Armalite AR10 upper receiver? I have a DEF10 and am thinking of rebarrelling to a Ballistic Advantage Hanson barrel.
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Posted: 10/31/2017 7:25:28 PM EDT
[Last Edit: Sinister]
[#1]
You can but you'll need a shorter (AR-15) gas tube. You may also have to shorten your handguard rail. You'll have to do a headspace check to ensure your present bolt safely mates to your new chamber.
This print shows you the gas tube length difference (AR-10 is a quarter-inch longer than AR-15/DPMS-308). 
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Posted: 10/31/2017 8:08:18 PM EDT
[#2]
I have a standard mid length gas tube already (non Armalite). What do you mean by shortening the handguard rail? I have free float rail on there now if that makes a difference.
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Posted: 10/31/2017 8:22:02 PM EDT
[Last Edit: Sinister]
[#3]
If you use a low-profile gas block it'll fit inside your rail. You'll have to check if the DPMS mid-length gas port is drilled the same distance from the rear of the barrel extension -- too short and the bolt carrier won't go forward far enough, too long and you won't enough gas to function correctly.
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