bluto wrote:I am being handed down a 7.5" 5.56x45 NATO upper, do I need a certain lower or will any 5.56 lower work ?
JJ wrote:Unless you have a tax stamped lower, or a pistol lower, you shouldn't be putting that upper on anything....
grimbeaver wrote:Could at least explain to him why...
Any AR-15 lower should mechanically work. Since that is a short barrel though you need either a complete pistol lower or a stripped lower that has no stock which you intend to build out as a pistol lower. Should you attach it to a lower with a stock (which is a rifle lower) that would make it a short barrel rifle (SBR) which is illegal without a tax stamp.
Technically having a pistol upper in your possession with no pistol lower but also having a unpaired rifle lower in your possession means you have the means to build a SBR and possession of all the components without a tax stamp is illegal.
grimbeaver wrote:Could at least explain to him why...
Any AR-15 lower should mechanically work. Since that is a short barrel though you need either a complete pistol lower or a stripped lower that has no stock which you intend to build out as a pistol lower. Should you attach it to a lower with a stock (which is a rifle lower) that would make it a short barrel rifle (SBR) which is illegal without a tax stamp.
Technically having a pistol upper in your possession with no pistol lower but also having a unpaired rifle lower in your possession means you have the means to build a SBR and possession of all the components without a tax stamp is illegal.
bluto wrote:Thanks and yes I am aware of the law, the first two replies is why I hesitate to ask questions here... .
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