Do I need an FFL to buy this?

If you and the seller live in different states, yes. The seller ships to your FFL and you complete a 4473 and background check there. If you live in the same state, federal law allows a private sale, but many states require an FFL transfer anyway. Check your state's rules before you meet.

Suppressor build kits

Firearm part

Tubes, baffles and caps sold together to assemble a suppressor. A complete kit is a silencer under the Gun Control Act. Out-of-state sales ship to your FFL, and making cans to sell requires a manufacturer license.

Nothing listed here yet. List yours. It's free.

Before you buy a kit

Check state law first. Several states ban silencers outright, and that includes kits.
Confirm every part is listed: tube, baffles or core, both end caps, and any spacers.
Ask whether the kit needs machining (drilling bores, threading) or is ready to assemble.
Kits sold as "solvent traps" with indexed or pre-drilled cups are still silencer parts. SilencerPart doesn't allow that framing.
Building one for yourself is different from building to sell. Selling cans you make requires a manufacturer license.

Common questions

Do I need an FFL to buy this?: If you and the seller live in different states, yes. The seller ships to your FFL and you complete a 4473 and background check there. If you live in the same state, federal law allows a private sale, but many states require an FFL transfer anyway. Check your state's rules before you meet.

Not sure how transfers work now? Read what changed with the NFA in October 2026 and our buying and selling rules.