How to Buy a Suppressor

The Basic Requirements

Before you begin, you need to meet a few federal requirements:

• You must be 21 years or older to purchase from a dealer (a trustee on a trust can be 18 or older)
• You must be a U.S. citizen or legal permanent resident
• You must be legally allowed to possess firearms under federal law
• You must live in one of the 42 states where suppressor ownership is legal

If you can legally buy a firearm, you can likely buy a suppressor.

Step 1: Choose Your Suppressor

Suppressors come in different configurations for different purposes. The main categories include:

Rimfire suppressors work with .22 LR, .17 HMR, and similar small calibers. They are typically the most affordable option and offer the greatest relative sound reduction.

Pistol suppressors handle 9mm through .45 ACP, and similar handgun calibers. Most are rated for pistol caliber carbines as well.

Rifle suppressors manage the higher pressures of centerfire rifle cartridges. All .30 caliber suppressors can also handle smaller calibers like 5.56 and 6mm variants.

Multi-caliber suppressors offer flexibility across multiple platforms but may involve compromises in size or weight.

Consider what firearms you plan to suppress most often, then select a suppressor rated for those calibers.

Thread pitch decides what physically fits. Our types and thread pitch guide covers the common pitches by platform and the shoulder and concentricity problems that a matching pitch does not solve.

Step 2: Find a Dealer

Suppressors must be purchased through a licensed dealer with Special Occupational Tax (SOT) status. These dealers are authorized to handle NFA items.

Some dealers offer additional services like ATF paperwork assistance, fingerprinting and photographs, NFA trust preparation, and direct-to-door delivery in qualifying states.

Capitol Armory provides all of these services and maintains one of the largest suppressor inventories in the country.

Step 3: Complete the ATF Form 4

The ATF Form 4 is the application for transfer of your suppressor. It requires:

• Your personal information (name, address, citizenship)
• The suppressor details (make, model, serial number, caliber)
• Passport-style photograph
• Fingerprints (two FBI FD-258 cards or electronic submission)
• CLEO notification (copy sent to your local chief law enforcement officer)

Capitol Armory handles all the paperwork for you and submits everything electronically for faster processing. We walk you through each step, prepare your documents, and file your eForm 4 so you can focus on choosing the right suppressor.

Step 4: Individual vs. Trust Filing

You can register your suppressor as an individual or through an NFA gun trust.

Individual filing puts the suppressor in your name only. The process is slightly simpler, but only you can legally possess the suppressor.

Trust filing allows multiple trustees to possess the suppressor. This is useful for families or situations where others might need access. Each trustee must submit fingerprints and photographs.

We wrote a full comparison of trust versus individual filing, including what Rule 41F changed and what happens to the item when you die.

Capitol Armory offers a multi-use NFA trust that works in all 50 states and is designed for speedy approvals. Unlike single-use trusts that charge $29.95 per suppressor, our multi-use trust covers unlimited NFA items for one price, all in one legal document. If you plan to own more than one suppressor, the savings add up fast.

Step 5: Wait for Approval

After submission, the ATF conducts a background check and processes your application. Current wait times vary:

eForm 4 submissions are currently averaging days to weeks, depending on ATF's workload and your background check. The ATF has dramatically improved processing speed through electronic filing.

Paper Form 4 submissions take longer, often several months.

You can check current approval times and track the process through your dealer or directly with the ATF. See our wait times tracker for current data.

Step 6: Take Possession

Once approved, your dealer receives notification. You complete a standard 4473 form (the same as any firearm purchase), and your suppressor is released.

Capitol Armory's Direct-to-Door program delivers your approved suppressor directly to your home in all 42 suppressor-friendly states.

What About the Tax Stamp?

Historically, suppressor purchases required a $200 federal tax stamp. As of January 1, 2026, the One Big Beautiful Bill Act eliminated this tax for suppressors, short-barreled rifles, short-barreled shotguns, and AOWs.

The Form 4 process, background check, fingerprints, and registration requirements remain in place. The $200 cost is simply gone.

Read our complete guide to the 2026 tax changes for more details.

First, Is It Legal Where You Live?

This is step zero, and it is the one people skip. Suppressors are legal to own in 42 states. Eight states and the District of Columbia prohibit them outright, and no amount of federal paperwork changes that.

Of the 42, fifteen tie lawful possession to federal registration or federal compliance in their own statutes. That matters more than it used to. Ohio names the federal registry by name. Washington writes registration into the offense itself. Nevada puts the burden of proving federal authorization on you in the statutory text.

Hunting is a separate question from ownership, and the two diverge. Connecticut allows you to own a suppressor and bans hunting with one outright. Georgia restricts it by land status. Louisiana permits it only for an enumerated list of species.

Find your state before you spend anything.

What It Actually Costs

The $200 tax is gone. What is left is the suppressor itself and a few small line items people forget to budget for.

The average suppressor runs $400 to $1,200. Budget for a mount on top of that, because a suppressor with no way to attach it to your rifle is an expensive paperweight.

One cost that is easy to miss: if you plan to suppress more than one host, thread pitches differ across platforms. Ask before you buy rather than after.

The 4473 at Pickup Is Not the Same as a 4473 Instead of a Form 4

Step 6 above mentions a Form 4473 at pickup. That is the ordinary, longstanding process: your Form 4 is approved, your name is on the item in the federal registry, and you fill out a 4473 the way you would for any firearm when you physically collect it.

Since the August 5, 2026 federal court ruling, some dealers are offering something different: a suppressor transferred on a 4473 instead of a Form 4, with no registration at all. Those are not the same transaction and they do not leave you in the same place.

A 4473 is a point of sale record in the dealer’s bound book. It is not a registration. The ruling did not repeal the law that makes possessing an unregistered suppressor a crime; it stopped the government from enforcing that law against the parties the order covers. If an appellate court stays or reverses it, the law is still there and the shield is gone, and there is no published mechanism to register the item after the fact.

We think the Form 4 is worth the wait. Here is the full reasoning, including what nobody can answer yet about crossing state lines, warranty work, and estates.

Five Things That Slow People Down

Bad fingerprint cards. Smudged or incomplete prints get kicked back and you start the clock over. Electronic submission avoids most of this.

Name mismatches. The name on your Form 4 has to match your identification exactly. A missing middle initial is enough to cause a delay.

Filing paper instead of electronically. eForm 4 approvals are running days to weeks. Paper runs months. There is rarely a good reason to file on paper.

Buying before checking the thread pitch. Your host firearm needs a threaded barrel in the right pitch, or a muzzle device that matches your mount.

Assuming your state is like the state next door. It frequently is not. Vermont borders two states that ban suppressors outright.