February 25, 2012, 11:26 PM
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#3
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Senior Member
Join Date: August 25, 2001
Location: LC, Ca
Posts: 1,723
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Measure the barrel diameter where the existing front sight based is pinned.
I like clamp-on gas blocks.
http://www.egwguns.com/gas-blocks/ar...picatinny-top/
or
http://www.egwguns.com/gas-blocks/ar-gas-block/
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