Asked by geoz48 on November 3, 2018
Gas system
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Mid length gas system. Info: classicfirearms.com/smith-wesson-11515-mp15-performance-center-semi-auto-223/
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geoz48 on June 8, 2017
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Mid length gas system. Info: classicfirearms.com/smith-wesson-11515-mp15-performance-center-semi-auto-223/