Suppressor end caps & front caps
Firearm partCaliber-specific front caps, rear caps and blast chambers. Front caps tighten the bore for smaller calibers and take the damage in a strike. They're silencer parts, so out-of-state sales ship to your FFL.
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Why swap front caps
A multi-caliber can is bored for the biggest bullet it's rated for. A smaller-bore front cap gets you closer to a dedicated can when you shoot smaller calibers, and it's the cheapest part to replace if you clip it. Flat caps, brake-style caps and flash-hider caps also change recoil and flash.
What to check
- Brand and model fit. Front-cap threads are proprietary (SilencerCo Omega, Dead Air Sandman, HUXWRX Flow and so on).
- Bore diameter, and that it's at least as large as the biggest bullet you'll shoot through it.
- Rear caps: the mount interface they use (HUB, ASR, KeyMo and others).
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.