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Old February 6, 2013, 01:31 PM   #8
Join Date: August 23, 2006
Location: Los Angeles, CA
Posts: 53
What is your gas port size now?

Clipping the buffer spring will change how your 5.56 upper runs.

Read my article on AR-15 gas system function to pick out your symptoms.

Last edited by AR15barrels; February 6, 2013 at 01:37 PM.
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