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AR15.COM
8/24/2015 11:56:28 PM EDT
I just bought a m4v11 16in midlength urg and was wondering what buffer and spring to use?  I'm using a psa mil spec tube if that matters.
8/25/2015 8:26:22 AM EDT
[#1]
Standard Spring w/ an H-Buffer
8/25/2015 1:40:26 PM EDT
[#2]
Thanks