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Sig 522 question regarding set screw for gas block
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January 9, 2013, 09:35 PM
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Ridge_Runner_5
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Join Date: February 8, 2008
Location: Denver, CO
Posts: 1,925
It's probably a very small hex head. But the gas block is purely for the sight, since the 522 is blowback operated and doesn't need gas to cycle.
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