Question about Form 1

[East_TN_Patriot]

I'm sure this has been answered somewhere, but my brief search didn't yield a positive result.  So I am getting ready to SBR a lower and planning to do a .300 BLK upper on it.  I know I put that in the block on the form, but am I correct in saying I can legally put another upper on the rifle in a different caliber as long as the barrel and OAL is greater than that listed for the .300 upper listed on the paperwork?  I ask because I already have an 18" upper in 5.56mm I plan to use with the upper as well assuming I can swap calibers.  Am I correct?

[Photoguy67]

It does not have to be longer, you just have to be able to return the rifle to original registered configuration. ie... you are can it registered as a .30 cal 8" barrel and also have a 4" .22. Just don't get rid of the one that its made with, or at least same size. Also in caliber, they are looking for the size of the bullet not cartridge. so a .300 aac blackout would be registered as a .30 cal. Hope this helps.

[Hozzie]

I am not sure you even have to keep the original. I think you can change calibers without issue. Most say the send a note to the atf, but even hat has been debated.

[Hershmeister]

I am not sure you even have to keep the original. I think you can change calibers without issue. Most say the send a note to the atf, but even hat has been debated.

That is correct. The form 1 is "making an SBR". The info on bbl length etc is simply data to the batf - they could care less.

If you really want to cover your butt then send them a note updating then on the latest status of your sbr, but really not necessary

[Oh Shoot]

Even if you take it out of NFA purview and sell it as a GCA rifle, or even as just a lower, notification is "suggested" but not required.

On the other hand, the new owner cannot put a short barrel on it without a tax stamp, so any configuration of it as a GCA pistol would seem to be a no no, even if it had started life as such before being SBR'd, so that person should be informed of its history I'd think

- OS

Edited July 18, 2016 by Oh Shoot