Short answer: for most 5.56 AR-15s, the Dead Air Sierra 5 is the all-round pick: about 5.7 inches and 13.3 oz with its Xeno mount, rated for full-auto. The Huxwrx Flow 556k is a compact alternative (about 5.5 inches, 11.8 to 12.9 oz, per Huxwrx); the SureFire SOCOM556-RC2 (6.2 inches, 17 oz) is the duty-grade choice; and the CMMG Zeroed 556 and YHM Turbo K cover budget direct-thread and QD options. Check your state first: suppressors are banned in eight states.
Length and weight compared
Figures are the makers' published specs (Dead Air's from press and retailer copies of its spec sheet), read October 2026. We don't repeat makers' decibel claims, because test methods differ.
What to look for
- Mount. Direct-thread cans screw onto the barrel; QD cans clamp onto a matching muzzle device you leave on the rifle. Dead Air's Sierra 5 uses the common 1.375x24 HUB socket, so you can swap mounts.
- Length and weight. Every inch and ounce sits at the end of the barrel. Short barrels and compact cans keep the rifle handy.
- Rating. Check barrel length limits and whether it is rated for full-auto or short barrels if you run an SBR.
- Caliber. A .22-caliber 5.56 can is not for 300 Blackout; see 300 Blackout.
Buying one in 2026
Since October 9, 2026, ATF does not enforce NFA approval or registration for suppressors, but state law still applies. See how to buy a suppressor and which states allow them.
5.56 suppressors, with today's prices
Lowest price across the stores we track:
Dead Air Sierra 5, Xeno mount
Pros
- About 5.7 in, 13.3 oz with Xeno
- HUB mount; full-auto rated
Cons
- Uses Dead Air Xeno muzzle devices
Best overall
Huxwrx Flow 556k, with flash hider
Pros
- About 5.5 in, 11.8-12.9 oz (Huxwrx)
- QD with included flash hider
Cons
- FDE on this listing
Compact
SureFire SOCOM556-RC2
Pros
- 6.2 in, 17 oz
- SureFire fast-attach mount
Cons
- Heaviest here
Duty
GEMTECH Abyss 5.56 direct thread
Pros
- 6.2 in, 16 oz
- Direct thread
Cons
- Direct thread only
Direct thread
Exigent Defense Vanish556
Pros
- 6 in, 10.2 oz
Cons
- Single store listing
Lightweight
CMMG Zeroed 556 direct thread
Pros
- 6.5 in, direct thread
Cons
- Weight not stated in the listing
Budget
YHM Turbo K, QD flash hider mount
Pros
- 4.6 in, includes QD flash hider
Cons
- Weight not stated in the listing
Short QD
Compare every suppressor, or read how suppressors work.
Frequently asked questions
What is the best 5.56 suppressor?
The Dead Air Sierra 5 is the all-round pick: short, about 13.3 oz with its mount, full-auto rated and on a common HUB socket.
What is the lightest 5.56 suppressor here?
Of the cans with published weights, the Exigent Vanish556 at 10.2 oz and the Huxwrx Flow 556k at 11.8 to 12.9 oz.
Direct thread or QD?
Direct thread is simpler, with no separate mount; QD lets you move the can between rifles that wear the matching muzzle device.
Can I use a 5.56 suppressor on 300 Blackout?
No. A 5.56 can has a .22-caliber bore; 300 Blackout needs a .30-caliber suppressor.
Do I need a tax stamp for a 5.56 suppressor?
Not federally since October 9, 2026, but your state's law still applies. See how to buy a suppressor.
