AR-15 Reliability Demonstration

I take a Colt 6920 and put it to the dirt test.  I pour dirt inside of the AR and inside the magazine to test the reliability of the AR15 rifle.  Don't watch if you're squeamish!
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Please watch: "BCM Mk12 with AEM5 Silencer and some cool winter rigging!"
BCM Mk12 with AEM5 Silencer, RFB with...
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