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tote4570
September 5, 2009, 10:28 AM
Who makes a 12 gauge upper receiver for an AR-15?

the rifleer
September 5, 2009, 10:32 AM
I know of none. I you had a 12 gauge upper, you would need a 12 gauge lower and it probably wouldn't function like an AR, it would simply look like one and have a different mechanism to reload itself.

12 gauge is much wider than a .223, so like i said, it probably wouldn't feed though the lower.

The only shotgun i have seen that is in AR style was a .410, and i don't know if you can just buy an upper.

Don H
September 5, 2009, 12:14 PM
It would certainly be possible to have a 12-gauge upper as long as it was single-shot - after all, there are .50BMG single-shot uppers available. I have also seen video of a belt-fed 12-gauge upper that would either be semi-auto or full-auto depending on the lower it was mounted to.