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Join Date: Jul 2007
Location: Austin,Texas, by God!!
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The "C" is for compensated. It has ports in the barrel/slide to direct some of the gasses upward. IMHO the 9mm does not have sufficient recoil to be of concern. The 9mm does not have sufficient volume of gas to make a real difference. Probably the only Glock that would truly benefit from the ports is the 10mm's.
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"Robo is right" Fuzzball