The issue with traveling with the suppressor is who you talk to and what you read. Technically according to ATF a Suppressor isn't required to be documented for a move on the form 5320.2, however, if you read the back of the form 1 or form 4 it states it does. Contradictory information there from the ATF.
Then there's tons of information online stating that The ATF Form 5320.20 doesn’t include suppressors under it’s requirements and for suppressors, you don’t need to get prior authorization before you move or travel.
All of this reverts to a gray area and depending on who you deal with when leaving and returning. Like previously mentioned, I have had multiple friends travel to South Africa out of Houston and Atlanta with zero issues. They had their can added to 4457 and brought all their paperwork with them. They flew out of country no problem and came back in no problem. They have done this multiple multiple times with no issues whatsoever. The caveat to that is you hear of some people dealing with go hard's at CBP that cause some problems. It is stated on ATF website, which you will see below, they do not require notification for movement of a can. Really it is dependent upon the individual and what risk they are willing to take.
In my opinion, if you have the proper documentation for your can and can reference area's where ATF says no notification of movement for a Can, you should be ok. However, once again, that has to be on you to make that decision. I think it could go either way and there really isn't a black and white determination of what is legal and the correct process.
Silencer central: Silencers are exempted from notification when you travel or relocate. Unlike all other NFA items, you do not have to notify the ATF before traveling across state lines with your silencer, so the whole process is quite painless. You literally transport it as you would any other firearm.
You need to have all of your proper documentation – Form 4s, tax stamps, trust papers – so that you can come back home with the suppressors that you took overseas with you with as little hassle as possible.
In the same vein as the point above, you’ll be dealing with CBP to get your suppressors out of the country in the first place, which is an important part of getting them back in when your trip is over.
US Customs Form 4457 is where you’ll declare your suppressors before traveling internationally so that you can come back home with them duty-free.
Silencer Shop: Yes, you can easily travel with a suppressor: when you take your suppressor out of your home state; you (the owner of the suppressor) are not required to complete any special/additional paperwork. Transporting a suppressor is simple: your silencer needs to be securely locked up and out of reach when you travel with it. or other NFA items, “the registered owner of a destructive device, machine gun, short-barreled shotgun, or short-barreled rifle needs authorization to lawfully transport such items interstate” per the ATF. If you are taking any of these items outside of your home state an
ATF Form 5320.20 must be approved prior to travel. Yes, flying with a suppressor is likely to be legal, just know a few simple points. At the airline’s check-in desk, declare the suppressor and check the case with the desk attendant. The
firearms case (note: a hard-sided container with
TSA-approved locks is required to check firearms) that contains the suppressor will be grouped with the checked bags and stowed in a section of the plane with luggage and cargo.
Guns America: Prior to traveling out of state with an NFA Registered Destructive Device, Machinegun, Short Barreled Rifle (SBR), or Short Barreled Shotgun (SBS), you must submit a written request using ATF Form 5320.20 and receive prior authorization before transporting those items across state lines. It’s one of the reasons having a braced pistol rather than a short-barreled rifle is so advantageous. The braced pistols fall under handgun laws, work with concealed carry permits, and don’t require any of this nonsense.
If you’re observant you would have noticed that suppressors and AOWs aren’t on the list above.
Suppressors are one of two NFA items that don’t require notification or prior authorization before leaving your state. Suppressors are treated very similarly to regular firearms.
You’re not required to notify anyone when you leave your house, city, county, or even state with your suppressor. So, it’s a myth that you must keep the government informed of your silencer’s location at all times or get prior authorization before leaving your state with a suppressor. That requirement applies to the other NFA items listed above.
ATF: Application to Transport Interstate or to Temporarily Export Certain NFA Firearms (ATF Form 5320.20)
Download Application to Transport Interstate or to Temporarily Export Certain NFA Firearms (ATF Form 5320.20) (323.83 KB)
This form is used to obtain permission to temporarily or permanently move your registered National Firearms Act (NFA) machine gun, short barreled rifle or shotgun, or destructive device interstate.
Persons other than qualified federal firearms licensees (FFLs) or government agencies are required to obtain this permission.