Form 1 and Form 4 both now carry a $0 tax, which means the choice between them has nothing to do with cost anymore and everything to do with what you're actually trying to do: build something yourself, or acquire something that already exists.
Form 1 — Make
- You're manufacturing an NFA item yourself — almost always an SBR built from a receiver you already legally own
- No dealer required for the transaction itself
- You must wait for approval before completing the short-barreled configuration
- Tax: $0 as of January 1, 2026
Form 4 — Transfer
- You're acquiring an already-made NFA item from a dealer or private party
- Goes through a licensed dealer (FFL/SOT) handling the transfer
- You must wait for approval before taking possession from the dealer
- Tax: $0 as of January 1, 2026
The core distinction: making vs. transferring
Form 1 is for making an NFA item. In practice, this overwhelmingly means building a short-barreled rifle from an existing receiver — you already own a rifle or the stripped receiver for one, and you're registering your intent to configure it with a barrel under 16 inches or an overall length under 26 inches. Once approved, you complete the build yourself. Form 4 is for transferring an NFA item that already exists in that configuration — most commonly, buying a suppressor or a factory-built SBR from a dealer.
The distinction matters because it determines your starting point. If you already own the underlying firearm and just want to modify its configuration, Form 1 is very likely your path. If you're acquiring something you don't currently own in any form — a suppressor being the most common example, since there's no "unsuppressed" version of a suppressor to already own — Form 4 is the applicable form.
Suppressors are almost always Form 4
While the statute technically allows an individual to manufacture a suppressor via Form 1, doing so requires machining capability, precision, and legal compliance well beyond what a typical buyer has access to or reason to pursue. In practice, nearly every suppressor a first-time buyer registers comes through Form 4 — purchased from a dealer who already has the item in inventory or can order it, transferred to you after approval.
SBRs commonly go either way
Short-barreled rifles split more evenly between the two forms. A Form 1 SBR build makes sense if you already own a rifle or a stripped receiver and want to configure it with a short barrel yourself — a common and popular path precisely because it doesn't require locating a factory-built SBR through a dealer, and often costs less overall since you're modifying something you already own rather than purchasing a complete new item. A Form 4 SBR transfer makes sense if you want to buy an already-assembled short-barreled rifle from a dealer's inventory rather than building one from a receiver you own, which can be the simpler path if you don't already own a suitable base rifle or don't want to handle the build yourself.
| Factor | Form 1 | Form 4 |
|---|---|---|
| Purpose | Manufacture an item you'll build yourself | Transfer an already-existing item to you |
| Typical use case | SBR build from an owned receiver | Suppressor purchase; factory SBR purchase |
| Dealer required | No | Yes |
| Tax (2026) | $0 | $0 |
| Background check | Yes | Yes |
A concrete example of each
Picture two buyers on the same day. The first already owns an AR-pattern rifle with a standard 16-inch barrel and wants to reconfigure it with a 10.5-inch barrel to make it more maneuverable for home defense or a specific range use case. Because they already own the receiver — the actual regulated part of the firearm — they file a Form 1, wait for approval, and then complete the barrel swap themselves once approved. The second buyer doesn't own anything suppressor-related yet and wants their first can. Since there's no unsuppressed version of a suppressor sitting in their safe to reconfigure, they work with a dealer, select an item from available inventory, and file a Form 4 to have it transferred to them once approved.
Why the dealer requirement exists for Form 4 but not Form 1
The dealer requirement on a Form 4 isn't arbitrary paperwork — it reflects that a Form 4 transfer involves moving a regulated item from one party (the dealer, who is typically also a Special Occupational Taxpayer, or SOT) to another (you). That transfer has to be logged and tracked through a licensed party at each step. A Form 1, by contrast, doesn't involve moving the item between parties at all — you already possess the receiver, and you're registering a change to its configuration, not acquiring it from someone else. That's the structural reason no dealer sits in the middle of a Form 1 application the way one does for a Form 4.
Prepare for your build or purchase
Whichever form applies to you, mounting and configuration accessories are worth sourcing while your application processes.
Frequently Asked Questions
Can I use a Form 1 to make a suppressor myself?
Technically the statute allows it, but doing so requires significant machining capability and legal compliance well beyond typical SBR builds. The overwhelming majority of Form 1 filings are for SBR builds, not suppressor manufacturing.
Does Form 1 or Form 4 process faster?
Both are driven by the same ATF review queue and have both lengthened since the tax change increased application volume. Neither form has a structural advantage in processing speed.
Do I need a dealer for a Form 1 SBR build?
No. A Form 1 build from a receiver you already own doesn't require a dealer the way a Form 4 transfer does. You submit directly to the ATF and wait for approval before assembling the short-barreled configuration.