[NCMedic]

This is probably a self answering dumb question but I have been looking at all the SBR / NFA stuff and I have confused myself....
The registered part of a AR is the lower.. If I for example want to make a 300BLK SBR.. I have my trust / CLEO sign off, do my forms, pay my $200 and when my stamp arrives can build my SBR upper.
So therefore the lower is what is registered as a SBR..... As long as I do the paperwork right and list all possible calibers and configurations on the forms it is still good to go.... So I can have a 10" 300BLK and a 11.5 5.56 barrel, swap them back and forth with something like a Templar Fast Rail and be completely legal, as long as whatever I do falls within the caliber combination / lengths on the form? However if I wished to put a SBR upper on my wife's AR, it would have to be registered and another $200?

So when you build a SBR AR you are really registering the lower as the SBR?
But if for some reason I wanted a 14", let's say 10/22.... The whole thing is registered..

So you can have multiple uppers for one SBR? I get that some say that is getting into "constructive intent" or whatever.

Right?

Wrong?
Thanks...

 

[Demon]

The "gun" is registered with the ATF's NFA Branch. In an AR-15 the "gun" is the lower receiver. In a Ruger 10/22 the receiver is a single piece.

 

[Demon]

Short answer: if you register an AR-15 lower receiver as a Short Barrel Rifle you can put any length barrelled upper receiver on it.

 

[NCMedic]

Yup.... Got that... But can you have multiple SBR uppers for one lower?

 

[Demon]

Upper receivers (be they with 7" barrels or 24" barrels) can be shipped to your residence all day long without any paperwork. This upper receiver is not a "gun" and is simply parts that you put on the "gun" (lower receiver) that you register with the ATF.

You cannot register the upper receiver of an AR-15 rifle therefore you cannot swap the upper receiver to any host lower receiver you want. If you have an SBR-registered AR-15 lower receiver.... and your wife has a non-SBR lower receiver.... you had better not put a barrelled upper with a barrel less than 16 inches on her gun or you will be violating the 1934 National Firearms Act.

 

[Demon]

You can have infinite uppers with barrels under 16 inches just so long as you have at least one SBR lower.

 

[NCMedic]

Got it..... Did some more research, seems like you can have whatever you want as long as you can still make whatever combination you registered, so if you registered a 7.5" 5.56 barrel, as long as you can still make that combination you are still compliant...