In the U.S., building a suppressor (silencer) is strictly regulated under the National Firearms Act (NFA). Here are the key rules and steps you must follow:
1. Suppressors are NFA Items
Suppressors are classified as Title II firearms under the NFA.
They require registration with the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF).
2. ATF Approval Before Manufacturing
You must submit an ATF Form 1 (Application to Make and Register a Firearm).
Pay the $200 tax stamp.
Wait for ATF approval (can take several months).
Do not begin making the suppressor until you receive approval.
3. Background Check
You must pass an FBI background check.
This applies to both individuals and trusts.
4. Marking Requirements
The suppressor must be engraved with:
Manufacturer’s name or trust name.
City and state.
Serial number.
Model (if applicable).
Caliber.
5. Restrictions
Some states prohibit suppressor ownership or manufacturing, even with NFA approval. Check your state and local laws.
Felons and prohibited persons cannot own or build a suppressor.
6. No Unregistered Parts
Possessing unregistered suppressor parts (such as baffles, tubes, or end caps) before Form 1 approval can be considered constructive possession, which is illegal.
7. No Selling Without Further Approval
If you want to sell or transfer the suppressor, the new owner must file
