Thank you in advance for your help, guys. I'm moving out of state to another state that allows silencers and SBRs. My google search reveals that I can convert my SBR (an AR15) to a normal 16" rifle before I move and not have to get permission beforehand (I already destroyed the 14" upper receiver because the barrel cracked). Is that correct?

So my main question is, do I still use Form 4320.20 to notify the ATF that I moved my SBR's lower receiver after I move?
And, do I use a Form 4320.20 to notify the ATF after I move, that I moved my silencers?

When I did my NC to TN move - I notified both the ATF, and my NC and TN Sheriff (Via 5320.20's - 1 ea for my SBR and CAN).

I also gave a detailed explanation of exactly what I was doing, and verified everything before I moved anything. All parties were actually very helpful in the process.

Unless something has changed - the correct form is 5320.20 (not 4320.20)

-Chris

OK, this is a little confusing.

First of all, you would use a 5320.20 to get permission for interstate transport of your SBR, if in fact is was an SBR.

Silencers do not require prior approval.

Martinsburg will approve a 5320.20 for a silencer although it is not required.

So, if you put your SBR and your silencer on the same form, both will get approved.  

If you are doing this before you move, I would not confuse things with the 16 inch upper.  Just submit the Form and check the box that indicates that it is a permanent move.

If you are moving before you have time to get a 5320.20 approved, you are in a unique situation that does not usually apply.  You have a registered lower that has a 16+ inch barrel that is not currently under the purview of the NFA and you have a silencer that does not require prior approval...so, you can move before your form is approved.

But, you can't put a short upper on the registered lower until you have an approved Form 5320.20.

If i'm not totally confused then I think I have addressed your question.

You do not need to notify any local LEAs unless there are State restriction on NFA item.

Thank you very much! I will fill out the form and mail it in when I get to my new state. I'll include a letter explaining that I moved with the rifle in non-SBR configuration, just so they know I did it legally.

Don't confuse them more or give them a reason to question your actions. Just fill out the form and mail it in.

Have you already started your move?

Please forgive me for jumping in op.

Even though silencers don't require approval, would it be wise to submit a form anyways to update your address?

Anything else one would need to know when moving to a new state with a silencer? Anything regarding a trust?

Why do anything more than required? The legislature decided what is acceptable according to the law.

why did you destroy your SBR upper over a bad barrel? and the lower is still a registered SBR no matter what upper you put on it

You're right, why write a letter if I don't have to. It just raises questions. I want them to mail the paperwork to my new address though. I move in 2.5 weeks. So I haven't moved yet.

Once I do move, do I use Form 5320.20 to notify them of my new address? Or do I just write a letter with the details? I google searched and found that one person tried to submit a 5320 for that, but I'm not sure that's the proper way.

Thanks guys!

The barrel was bad so I destroyed that. I dismantled the upper receiver/handguard and cannibalized the parts (I guess "destroyed" was the wrong word to use).

Put your new address in Box 1.  That is the address the approved Form will be mailed to.  Put your current address in Box 6.  Put your new address in Box 7.  Check Box 2 NO.  In Box 5 put Permanent Change of Address.

Include the SBR and Silencer, even though the Silencer is not required.  This will properly update the registry.

Don't make it any harder or confusing.

This is one of the simplest form there is, don't make it hard.

Don't include any extra info or confusing letters.

Once you have you approved Form you can re-configure the SBR lower into an SBR.

You have looked at the Form 5320.20 right?? https://www.atf.gov/file/4781/download

This is the way to do it.  Nothing more.

Edited to Add:  I used my new address in boxes 1 and 7.  I also faxed them to 304-616-4501.  Instructions also allow you to e-mail them as scanned documents to [email protected].

If there is any concern with the form reaching you, just remember to setup mail forwarding to the new address.

There is no annotation of "Do Not Forward" on the envelope.

I don't know why they would not forward it, if a proper change of address is in place.

Sometimes mail from official government agencies is not forwarded, even when the individual has mail forwarding set up.

Thanks for your help, you guys are great.

If the address you want the Form sent to is in Box 1, you are gtg.

Don't want to Hi-jack too bad or start a new thread...  But it is acceptable to a SBR lower with a 16" upper across state lines without any NFA paperwork?

Technically, yes. Once the short barreled upper is removed from the lower, it is no longer under purview of the NFA guidelines.

Another good reason to have a Pistol build handy.

Yep, and it is a cheap answer to so many questions.  It should be the first thing anyone does when they get into the AR-15 variant SBR hobby.