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AR15.COM
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3/18/2009 5:12:58 PM EDT
I want to build an  upper assembly with a Stag Arms upper receiver, Bushmaster 16" heavy carbine barrel assembly, and a bushmaster complete bolt & carrier group. Would I have to check headspace if I did this? thanks
3/18/2009 5:14:05 PM EDT
[#1]
Not necessary if you are using all new parts.
3/18/2009 5:19:31 PM EDT
[#2]
I`m gonna buy all new parts. Thanks alot!
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