9 Best AR-15 Suppressors (5.56 And Multi-Cal)

Suppressors improve hearing safety for shooting sports and also have the side effect of making your gun look even better.

However, choosing the suppressor that is right for you, your gun, and your purpose, can feel stressful with the federal regulation that goes into it.

But that's why you have us!

We've consulted with the top NFA dealer in the US and have shot almost all the cans out there these past few years in free Texas.

So follow along for our top picks and recommendations for 5.56/.223 suppressors perfect for your AR-15 -- backed up with both quantitative and qualitative data.

Now's the perfect time with processing times down to a few days for most!

Suppressor Comparison Chart

The NFA, Suppressors, and You

A lot of people miss the good old days.

Take 1934 for example, gas was only 19 cents! The St. Louis Cardinals won the World Series and the Three Stooges released their first short.

Oh, and the National Firearms Act was passed and signed into law.

With the cost of a stamp now $0, NFA items have increased in popularity. None more so than the suppressor, at least in terms of purchasing a new NFA item.

Getting a stamp and everything is relatively easy, and we recommend doing it through a gun trust. Check out the $79 option through GunTrustGuru hosted on Capitol Armory (one of our fav places to buy suppressors). No notary needed!

How We Tested AR-15 Suppressors in 5.56/.223

We consulted with Capitol Armory, the largest NFA dealer in the U.S. and also licensed in all 42 suppressor-friendly states, for their best-performing and crowd-favorite cans.

Then, we took it out to the range for some scientific and qualitative data collection.

For decibel reading, we used a Larson Davis SoundTrack LxT-QPR sound-level reader.

We placed the mic perpendicular to the muzzle and 6 feet away. We then measured its LZpeak decibel reading, which is best for short impulses like gunshots.

We used a 10.3-inch Daniel Defense MK18 utilizing PMC X-TAC 5.56 M855 62gr.

No previous shots were taken so we could check for first-round pop (initial oxygen inside the can igniting).

Here's a baseline video and measurement at 161.2 dB, which is very loud and can easily cause hearing damage.

We then shot at least two full magazines suppressed with and without ear protection for a more subjective analysis.

Best AR-15 5.56 Suppressors

1. HUXWRX Flow 556K - Editor's Pick 5.56 Suppressor

Editor's Pick 5.56 Suppressor

HUXWRX Flow 556K

$1154

at Capitol Armory

Prices accurate at time of writing

$1154 at Capitol Armory

Silencer Central (see price)

GrabAGun (see price)

Palmetto State Armory (see price)

Specs

• Tested readings (LZpeak): 145.4 dB, 140.4 dB, 140.4 dB
• Rating: 5.56/.223, 5.7x28, .17 HMR, and other .22 calibers
• Weight: 11.8 oz
• Diameter: 1.6"
• Length: 5.5"
• Construction: 17-4 Stainless Steel
• Mount: QD
• Full-Auto Rated: Yes
• Minimum Barrel Length: No

Our overall Editor's Pick 5.56 suppressor is the HUXWRX Flow 556K, which revolutionized the industry a few years ago with its Flow-Through technology.

See those holes on the top?

A lot of the noxious gasses from shooting are pushed through those to the front and not vented back like traditional suppressors. This leads to very low back pressure.

So you can say goodbye to those gasses coming back to your face and also into your gun, putting extra stress on parts.

I've been using it on my main night vision and full-auto AR for over two years. It gets spicy hot after a few mag dumps but keeps on chugging. And flash suppression is pretty good.

Our videographer Jonny has also been running the Flow 556K on his MK18 for about the same time.

There is some first-round pop, but it drops down to a manageable 140 dB afterward. It's not hearing-safe, but it's okay with me for a mag or two.

The proprietary flash hider muzzle device gives the can both a pro and a con. Pro in that it's ridiculously easy to put on and take off...and doesn't come loose. But con in that you'll have to cough up about another $100.

Otherwise, this is our Editor's Pick for overall AR-15 5.56 can due to its low back-pressure, small size, QD, and decent sound suppression.

2. PTR Vent 3 - Quietest 5.56 Suppressor

Quietest 5.56 Suppressor

PTR Vent 3

$1359

at Capitol Armory

Prices accurate at time of writing

$1359 at Capitol Armory

Palmetto State Armory (see price)

Grabagun (see price)

Specs

• Tested readings (LZpeak): 132.2 dB, 129.9 dB, 129.9 dB
• Rating: 5.56/.223
• Weight: 11.8 oz
• Diameter: 1.6"
• Length: 7.8"
• Construction: 3D Printed Titanium
• Mount: Direct or HUB
• Full-Auto Rated: 120 rounds and 10 min break
• Minimum Barrel Length: 10.3"

If you've got the coin and want the absolute quietest 5.56 suppressor we've ever tested...check out the PTR Vent 3.

Yes...PTR in South Carolina who makes the PTR 91 (G3 clone).

And the secret?

PIP, or Purposely Induced Porosity, where gases can go through the entire can, which looks like foam...but titanium foam.

After slight first round pop, we were reading around 130 dB which is acceptable to me for a regular day of shooting at the range without ear pro.

It's easy to keep it direct threaded, or with its HUB mount you open it up to a bunch of other companies' mounting solutions.

It's slightly longer than the shorter cans on this list at 7.75 inches and requires a 10.3-inch minimum barrel length...no doubt influenced by the popularity of the MK18.

And if you're lucky enough to have a full-auto AR...you can only shoot 120 rounds before a 10-minute break.

However, if you have something longer than an MK18 and don't plan on dumping your entire loadout in full-auto...the Vent 3 is definitely worth looking into for the best sound suppression.

3. Silencer Central Speed K - Shortest 5.56 Suppressor

Shortest 5.56 Suppressor

Silencer Central Banish Speed K

$999

at Silencer Central

Prices accurate at time of writing

$999 at Silencer Central

Specs

• Tested readings (LZpeak): 142.1 dB, 142.4 dB, 141.1 dB
• Rating: 5.56/.223, 5.7x28, .17 HMR, and other .22 calibers
• Weight: 14.8 oz
• Diameter: 2"
• Length: 4"
• Construction: Inconel
• Mount: HUB
• Full-Auto Rated: Yes
• Minimum Barrel Length: None

Looking to go short? We love Silencer Central's Speed K, which adds a little girth to lose a few inches.

We've been trying out different AR-15 barrel lengths, and for our BCM 12.5", we decided to use the Speed K to still have a very compact gun.

I trained with it for a few months for the Wolverine 5K Competition, where it performed flawlessly. And the coating held up great to a lot of abuse.

Although not as low back pressure as the HUXWRX, the Speed K still kept the vast majority of fumes away from my face with its four gas holes.

Sound suppression was a happy medium between the two contenders above — better than the Flow 556K but worse than the Vent 3.

I've also shot a few mags of full-auto through it, and its Inconel construction held up fine.

Since it's from Silencer Central, you can order and manage everything from home and have it shipped directly to you.

Overall, this is a very compact suppressor with low back pressure, almost no first-round pop, and decent sound mitigation.

4. Otter Creek Labs Polonium K - Best Value 5.56 Suppressor

Best Value 5.56 Suppressor

Otter Creek Polonium K

$539

at Capitol Armory

Prices accurate at time of writing

$539 at Capitol Armory

GrabAGun (see price)

Palmetto State Armory (see price)

Specs

• Tested readings (LZpeak): 142.5 dB, 140.6 dB, 139.8 dB
• Rating: 5.56/.223
• Weight: 11.5 oz
• Diameter: 1.625"
• Length: 4.8"
• Construction: 17-4 Stainless Steel
• Mount: Direct thread
• Full-Auto Rated: 300 rounds, then let it cool
• Minimum Barrel Length: 7.5" for 5.56/.223

A very affordable can that's super short, suppresses well, and isn't too gassy.

The Polonium series is super popular for a reason and now beats out the OG value YHM T2/T3 cans.

Sure...it's a little heavy for its tiny size and suppresses middle of the pack.

But it's just such a great value I can look past everything.

Plus, it's universal HUB mounted and comes with an adapter for 1/2 x 28, so it's ready for your AR.

The 300 full-auto rounds before cooldown is an awesome stat since I'm sure other manufacturers would just say it's completely full-auto rated.

And having a minimum 7.5-inch barrel length for 5.56/.223 is all good. Not too many people are running 5-inch guns like us!

If you're looking for a great start suppressor that ticks, basically all the boxes...check the Otter Creek Labs Polonium K.

It has a big brother Polonium can, but I find the larger one feels way gassier than the K version. Flash suppression is better, but I'd rather take the shorter length and less gas.

However, if you're looking for a great suppression value can...check out the regular Polonium that's 1 inch longer and 2 oz heavier.

But, still an awesome value like the K.

Otter Creek Polonium

$549

at Capitol Armory

Prices accurate at time of writing

$549 at Capitol Armory

Palmetto State Armory (see price)

GrabAGun (see price)

Specs

• Tested readings (LZpeak): 135.2 dB, 134.0 dB, 134.5 dB
• Rating: 5.56/.223
• Weight: 13.5 oz
• Diameter: 1.625"
• Length: 5.8"
• Construction: 17-4 Stainless Steel
• Mount: Direct thread
• Full-Auto Rated: 300 rounds, then let it cool
• Minimum Barrel Length: 7.5" for 5.56/.223

5. CGS Sci-Six - Most Durable 5.56 Suppressor

Most Durable 5.56 Suppressor

CGS Sci-Six

$0

at GrabAGun

Prices accurate at time of writing

$0 at GrabAGun

Capitol Armory (see price)

Specs

• Tested readings (LZpeak): 137.3.4 dB, 134.0 dB, 133.9 dB
• Rating: 5.56/.223
• Weight: 17 oz
• Diameter: 1.64"
• Length: 6.5"
• Construction: 3D Printed 718 Inconel
• Mount: Taper mount muzzle device
• Full-Auto Rated: Yes
• Minimum Barrel Length: None

Looking for a true duty suppressor that can survive anything?

The entire Sci-Six from CGS is 3D printed from 718 Inconel to prevent improper welds and also gives it some crazy interior geometry.

It has everything going for it...great sound suppression, medium back-pressure, and only slight first-round pop.

Except it's a heavy boy.

I had it on my 11.5-inch, and it was a *chef's kiss* for all the positive reasons mentioned.

I think if you keep it short to a full-loaded 11.5-inch or a 10.3-inch MK18 (where it now lives), you're golden with a balanced gun that's not too front-heavy.

The taper mount is proprietary but lets you keep the can very concentric to the bore. I've never had a problem with it loosening, even under full-auto mag dumps.

My choice for currently the best duty 5.56 suppressor out there if you're running 10.3-inch or 11.5-inch barrels.

6. HUXWRX Flow 556 Ti - Best Lightweight 5.56 Suppressor

Best Lightweight 5.56 Suppressor

HUXWRX Flow Ti

$1185

at Capitol Armory

Prices accurate at time of writing

$1185 at Capitol Armory

GrabAGun (see price)

Palmetto State Armory (see price)

Specs

• Tested readings (LZpeak): 139.2 dB, 134.3 dB, 135.4 dB
• Rating: 5.56/.223
• Weight: 11.4 oz
• Diameter: 1.8"
• Length: 6.8"
• Construction: 3D Printed Titanium
• Mount: QD with muzzle device
• Full-Auto Rated: Yes
• Minimum Barrel Length: None

The titanium bigger bro to our favorite Flow 556K…

A serious contender if you want near-zero blowback of gases into your face and rifle with Flow-Through technology.

But also want better sound suppression than the 556K at the expense of being slightly longer (6.8" vs 5.5").

Just note that there’s a ~200 round “seasoning” period where you’ll see some sparks fly out because it's burning off excess Titanium material from the printing process.

Otherwise, it also has the near-zero blowback like its little bro.

If you’re only shooting in the day, it becomes very negligible after the 200 rounds, but if you’re at night under night vision goggles, you’ll still see them.

A great choice if you want Flow-Through and good noise suppression.

7. Silencer Central Banish 223 - Easiest Suppressor to Buy

Easiest Suppressor to Buy

Silencer Central Banish 223

$749

at Silencer Central

Prices accurate at time of writing

$749 at Silencer Central

Specs

• Tested readings (LZpeak): 132.5 dB, 131.5 dB, 130.4 dB
• Rating: 5.56/.223
• Weight: 11.4 oz
• Diameter: 1.5"
• Length: 7"
• Construction: Titanium
• Mount: Direct thread
• Full-Auto Rated: Limited
• Minimum Barrel Length: 16"

Looking for a 5.56 dedicated can that you can order and receive from home?

Check out the Banish 223 from Silencer Central, which came in second for most quiet can with limited first-round pop.

It’s more of a traditional titanium can compared to the newer Speed K, where you can still disassemble and clean yourself.

Otherwise, there’s still some decent gas blowback to your face when compared to ones with flow technology, but nothing like earlier generation cans where you get watery eyes.

Another thing to keep in mind is that it is only direct thread and limited full-auto firing. So I would recommend putting this on a dedicated 16-inch semi-auto or bolt action gun.

8. YHM Turbo T3 - Runner-Up Value Suppressor

Runner-Up Value Suppressor

YHM Turbo T3

$579

at Capitol Armory

Prices accurate at time of writing

$579 at Capitol Armory

Silencer Central (see price)

Primary Arms (see price)

Palmetto State Armory (see price)

Specs

• Tested readings (LZpeak): 142.4 dB, 141.7 dB, 139.5 dB
• Rating: 5.56/.223
• Weight: 12.8 oz with adapter
• Diameter: 1.56"
• Length: 5.6"
• Construction: Stainless Steel & Cobolt
• Mount: Phantom QD HUB
• Full-Auto Rated: Yes
• Minimum Barrel Length: 10"

Want the most affordable can that's super durable and still decent at suppression?

The older YHM Turbo T2 was my first can and was oppressively gassy on my MK18 and even 11.5" build. But it always kept on going with plenty of abuse, different gas setups, and random ammo.

The T3 continues the tradition of durability. And improves slightly on blowback.

It was still pretty gassy but I would estimate 20% less. Not good, not great.

However, sound suppression was still decent and I love the QD attachment to the Phantom family of flash hiders and brakes.

And being budget minded...YHM also includes a QD adapter and one muzzle device of your choosing.

So if you're looking for a great overall can that will outlast you and won't cripple your wallet...look for the Turbo T3 if you can find it in stock.

9. YHM Cat's Ass - Wildcard 5.56 Suppressor

Wildcard 5.56 Suppressor

YHM Cat’s Ass

$0

at GrabAGun

Prices accurate at time of writing

$0 at GrabAGun

Capitol Armory (see price)

Palmetto State Armory (see price)

Specs

• Tested readings (LZpeak): 140.6 dB, 138.9 dB, 138.3 dB
• Rating: 5.56/.223
• Weight: 11.2 oz
• Diameter: 1.94"
• Length: 4.25"
• Construction: 17-4 Stainless Steel and Cobalt 6 Blast Baffle
• Mount: sRx HUB
• Full-Auto Rated: Yes
• Minimum Barrel Length: 10"

It's officially called the Fat Cat...but it's affectionately known as the Cat's Ass because well...

However it's still a pretty nifty suppressor that gives you another option besides the Silencer Central Speed K for short and stubby cans that still suppress relatively well.

Hear it in action:

However, one big thing that differs from the much more expensive Speed K is that there's some blowback on the Fat Cat since it doesn't have any cuts for gas to escape forward. But not terrible compared to older cans.

It does ship with its own proprietary sRx muzzle device mount but it also comes with a HUB adapter. I like the sRx system though for its really small size and easy of quick disconnecting.

At its price point, the Cat's Ass...I mean Fat Cat, offers a great value for sound suppression in a compact package. And a cat butt.

Final Thoughts

Shooting a suppressed gun is a blast.

Especially if you start getting short with barrels and whatnot. A suppressor not only reduces noise but tames recoil and muzzle rise as well. This makes shooting so much more comfortable.

Hopefully, we gave you a good taste of the best 5.56 suppressors out there.

What are your feelings on suppressors? Your favorite 5.56/223 cans? Let us know in the comments! Not sure where to buy one...check out Best Places Online & Off to Buy Suppressors.

Latest Updates

March 2025: Complete re-write after testing of all new suppressors.