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Upside Down Gas Block

I had an AR build come across the workbench. The owner bought it from the guy who built it. I’m not sure when it was built but apparently it didn’t run.  Upon first inspection I easily found that the buffer retention pin was missing. The first fix on this rifle is installing the missing pin. After installing the buffer retention …

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AR Kaboom – What Happened?

This video was recently brought to my attention. I don’t know how long ago it happened or where?  I have seen many rifles ka-Boom. AR’s even. Usually what I see is a “blow-out” down the magwell and out the ejection port.  That is not what happened here. The upper completely blew apart. Up to and including separation near the rear …