12 Gauge AR-15 Upper machine gun!

Steve Johnson
by Steve Johnson

This is awesome:

Derek writes:

I have designed and patents pending on this.. Its a beltfed 12 gauge upper receiver for a ar-15 or m16 lower receiver. It uses your lower receiver, so if you have a ar15 its a semi auto shotgun, however if you have a registered m16 lower or a drop in auto sear it becomes a full auto 12 gauge machine gun. This is a prototype model and all the bugs arent worked out quite yet. Most of the problems that I have encountered revolve around the shotgun sheels not being consistent enough to eject sometimes.

I will be doing a brief interview with the Derek soon.

Hat Tip: Say Uncle

Steve Johnson
Steve Johnson

I founded TFB in 2007 and over 10 years worked tirelessly, with the help of my team, to build it up into the largest gun blog online. I retired as Editor in Chief in 2017. During my decade at TFB I was fortunate to work with the most amazing talented writers and genuinely good people!

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3 of 24 comments
  • Zeus Smith Zeus Smith on Sep 28, 2013

    and duck hunting will never be the same

  • Bo Treat Bo Treat on Jan 19, 2014

    this would shred a human to tiny bits, scary thought of it ever being used for combat or anything else.

    • Dfg Dfg on Jun 07, 2014

      @Bo Treat idk, i mean it would yet... but with give distance of realistic round travel and other factors it would make it much harder, though this particular style/type is not bad, it is very much a novelty in the sense that we have auto shotguns in much better design that serve their purpose and a belt fed shotgun just has no practical military application... though i would still sure as hell own one...!