If the reciever was purchased as a "reciever" or "other" it makes no matter if you build it as a pistol or a rifle. If the reciever was transfered as a "pistol" or "rifle" it will make a matter and should be built as such. Anymore recievers are normally transfered as "other" so you have a choice, this makes it illegal for anyone under 18 to buy a bare lower now also.
This is correct. Stripped lowers have the box "other" checked by the dealer and then "receiver" is written after the serial Number on the 4473 by the dealer.The lowers you have (if they're the ones I'm thinking of) were transferred as "receiver" and can be built into rifle or pistol. I believe that is the only proper way to transfer a stripped lower these days.
I have bought a couple of stripped lowers and want to build one as a pistol, is there any issue with doing that? I have only ever built them as rifles, 16-24" barrels and stocks. I am not sure what is legal to build. Thanks.
So, if you have a stripped lower receiver and you put a sig brace on it or whatever the handgun AR stock is.... that's all you have to do? Then you can buy a <16" barreled upper and you are good? I wanted to do that at one time, but thought there was more to it than that?