[HK SD9 Tactical]

So you could not legally own an AR pistol and an AR rifle?

An AR pistol is not a SBR. It is a pistol. Now if you put the AR15 pistol upper on the AR15 Rifle lower, you have a SBR and are in violation of the law. This is because the AR15 rifle lower is registered as a rifle not a pistol lower. You can possess both, you just can not intermix them (no, it is not even recommended that you put the Rifle upper on the Pistol lower). Why would you want to anyways?????

Another WTFATD moment......

 

[HK SD9 Tactical]

Just make sure that the Form 4473 for the AR15 lower is marked "handgun" then you can do anything with it that you want if you follow the law. But once a "rifle" lower, always a "rifle" lower as far as AR15 lowers are concerned. Even if the 4473 is marked "handgun", if you build the lower into a "rifle", the lower is always considered a "rifle" under the law. How would they know, they would not unless they get their hands on it if it is a rifle then again if it is a pistol. Not likely to happen, but it is the law and we are expected to follow the law no matter how stupid it is.