You’ve heard the term. Maybe you’ve seen one at a range or in a hunting video. And you’ve probably wondered: are those legal? Can I actually own one? How does the process work?
The short answers: Yes, in 42 states. Yes, you can. And the process is simpler than you think — especially since January 1, 2026, when the federal tax on suppressors dropped to $0, and since October 9, 2026, when ATF stopped enforcing the Form 4 for suppressors.
Update, October 10, 2026: On October 9, ATF stopped requiring a Form 4, federal registration or a tax stamp for suppressors, SBRs, SBSs and AOWs, for everyone nationwide. State law still applies. How buying a suppressor works now.
This page is your starting point. Read it in order, or jump to whatever question you have right now.
The 6 Questions Every New Buyer Has
1. Are suppressors legal?
Yes, in 42 states. Suppressors are federally legal and regulated under the National Firearms Act (NFA) of 1934. Eight states plus D.C. prohibit civilian ownership: California, Delaware, Hawaii, Illinois, Massachusetts, New Jersey, New York, and Rhode Island.
In 20 of the 42 legal states, state law ties owning or using a suppressor to federal registration or federal law, so read your own state’s rule before you buy.
→ Find your state’s suppressor laws
2. Is the process complicated?
Not anymore. Since October 9, 2026, ATF has not enforced the prior-approval, registration or tax-stamp requirement for suppressors, and the federal tax is $0. Here is what buying one takes now:
- Find a suppressor you want (we can help with that)
- Check your state’s law
- Buy it from a licensed dealer, who completes a Form 4473 with you
- Pass the background check (same as buying any firearm)
- Take possession of your suppressor
State law still applies. In the 20 states that tie suppressors to federal registration, filing an eForm 4 through your dealer is still the safe path, and ATF says it will keep processing filings. Details: how buying a suppressor works now and ATF’s transfer guidance.
3. What does a suppressor do?
It reduces the sound of a gunshot; it does not eliminate it. A suppressor works like a car muffler: it slows and cools the expanding gas that exits the barrel when a round fires. In a NIOSH study, suppressors cut the peak sound at the shooter’s ear by 17 to 24 decibels.
That is a big drop, and it changes how shooting feels for you and everyone around you. It is not silence. The federal researchers concluded that shooters should wear hearing protection every time they fire, suppressed or not. The movies lied to you.
→ How suppressors work, the full science
4. How does a suppressor work?
When a bullet leaves the barrel, the hot, fast gas behind it hits open air and makes most of the bang. A suppressor catches that gas in a series of expansion chambers and baffles that slow it, swirl it and cool it before it leaves. It cannot quiet the crack of a supersonic bullet.
5. How much does a suppressor cost?
Entry-level suppressors start around $300 to $400. Quality mid-range options run $500 to $800. Premium suppressors from makers like Dead Air, SilencerCo and BANISH range from $800 to $1,500.
Since January 1, 2026, the federal tax on suppressors is $0. You pay for the suppressor, the dealer’s transfer fee (usually $25 to $75), and that’s it.
→ Full cost breakdown: what you’re paying for
6. Which suppressor should I get?
It depends on what you’re shooting. The right suppressor for a .308 hunting rifle is different from the right one for a 9mm pistol, which is different from a .22 LR target gun. Before you buy anything, know your primary firearm and caliber.
→ Best suppressors by caliber, our full roundup series
Key Concepts to Understand Before You Buy
Individual vs. NFA Trust
You can buy a suppressor as an individual or through an NFA gun trust. Both work. An individual purchase is simpler. A trust lets multiple people legally possess and use the suppressor — useful if you’re married, have adult children, or want to share with a range partner.
→ Individual vs. NFA Trust: which is right for you?
Direct Thread vs. Quick-Detach
Suppressors attach to your barrel one of two ways: direct thread (screws directly onto barrel threads) or quick-detach (uses a proprietary mount for fast attachment/removal). Direct thread is simpler and lighter. Quick-detach is faster and better if you run the same suppressor on multiple hosts.
Hearing Safe vs. Not Hearing Safe
“Hearing safe” is a sales phrase, not a measurement. OSHA’s ceiling for impulse noise is 140 dB peak sound pressure, and NIOSH researchers who measured suppressed firearms concluded that shooters should always wear hearing protection. Suppressed or not, wear it.
Your Next Steps
Pick your path based on where you are right now:
- Just exploring? → Start with how they work
- Ready to buy? → Step-by-step buying guide
- Know your caliber? → Best suppressors by caliber
- Need to check your state? → State laws hub
- Want a recommendation? → [ps_recommender]
Not sure if you’re ready to buy? That’s fine. Read how buying a suppressor works now first. There is no clock and no pressure.