Gold Supporter
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First off, I would like to get the "why" out of the way for the imagination challenged individuals. The reason for building such a firearm would be because I can.
Now the what. I am thinking a person could make a shotgun utilizing a standard AR upper receiver and a fresh lower receiver. Since smoothbore AR barrels are a rare commodity, I believe that a rifled barrel could be drilled out to remove all the rifling. A 450 BM or 50 Beowulf barrel might work well for this given that they use nearly straight walled brass. The brass could then be loaded with shot or slugs for firing? Based on legal definition of shotgun this type of set up should be legal as long as barrel length minimum is followed?
Now the what. I am thinking a person could make a shotgun utilizing a standard AR upper receiver and a fresh lower receiver. Since smoothbore AR barrels are a rare commodity, I believe that a rifled barrel could be drilled out to remove all the rifling. A 450 BM or 50 Beowulf barrel might work well for this given that they use nearly straight walled brass. The brass could then be loaded with shot or slugs for firing? Based on legal definition of shotgun this type of set up should be legal as long as barrel length minimum is followed?