If you worry about the sound impact your 300 Blackout is having on your hearing or the hearing of those around you, investing in a 300 Blackout suppressor might be what you need. When I want to lower my sound impact, my top two choices are the Gemtech GMT .300 Blackout Suppressor (best overall) and the Advanced Armament-Cyclone Suppressor .300 AAC (best budget option).
I’ve used a lot of different 300 Blackout suppressors in my time, and the top eight are included in this review. I choose the Gemtech GMT .300 Blackout Suppressor in most cases because the design makes it easy to clean, it is very quiet, and is available in multiple calibers. Even though the pull weight is above the US Military minimum and it is not rated for automatic fire – it still gives the least amount of sound with the biggest bang (quietly!) for your buck.
If you are looking for a more affordable option, the Advanced Armament-Cyclone Suppressor .300 AAC is my top choice when you are on a budget. It isn’t the lightest suppressor on the list, but it offers durable machining, reliable functionality, and it is rated to handle automatic fire.
Comparison Table
Gemtech GMT .300 Blackout Suppressor
Key Specs:
- Caliber:
300 Blackout
- Weight:
14 ounces
- Length:
6.7 inches
Pros:
Full auto rated.
Sound tested to 124db.
Titanium tube with Cerakote finish.
Up to a 39dB reduction in sound, and a two-piece construction that makes routine maintenance easy. That—accompanied by its lightweight and smaller profile—makes the Gemtech your best bet.
Table of Contents
The Top 8 Best .300 Blackout Suppressors
1. Gemtech GMT .300 Blackout Suppressor
Key Specs:
- Caliber:
300 Blackout
- Weight:
14 oz
- Length:
6.7 in
Pros:
- Design makes it easy to clean.
- Light and durable.
- Very quiet.
- Available in multiple calibers.
Cons:
- Not rated to handle automatic fire.
- Pull weight is above the US Military minimum
What really sets the Gemtech GMT .300 Blackout Suppressor apart is its two-piece construction, which allows for easy comprehensive routine maintenance of the unit.
That—in conjunction with being manufactured out of a titanium G-core material—leaves you with a suppressor that will outlast most of its competitors (particularly at its price point).
Rated at a 36-39dB reduction for either supersonic or subsonic ammunition, it's one of the finest sound suppression systems on this list. At only 14 ounces and 6.7 inches in length, it’s both one of the lighter silencers and one with the smallest profile.
It’s the only model on this list that isn’t rated for automatic fire, so if that is your primary use of the tool, then this silencer isn’t for you. Nothing wrong with that. Right tool for the job and so on.
But this model is one of the absolute best at what it does.
2. Silencerco Omega Suppressor
Key Specs:
- Caliber:
5.7mm to .300 WM
- Weight:
14.0 oz
- Dimensions:
1.56”
Pros:
- Caliber options.
- Quick-release system.
- Short and light can.
- Rated for automatic fire.
Cons:
- Slightly longer and wider than some of the other silencers on this list.
- I’m going to have to be as quiet here as the can is.
The Silencerco Omega Suppressor blows other suppressors away when it comes to cartridge options. 5.56 mm NATO, 300 AAC Blackout, 300 Winchester Magnum, and 7.62 mm NATO.
Manufactured out of stainless steel, titanium, and stellite, this model is as tough as it is versatile. Making it a favorite amongst firearm enthusiasts of every ilk. In that vein, the included quick-release mount allows for a fast and easy breakdown or swap.
The anchor break knocks recoil down considerably and makes this model the best flash 300 blackout suppressor on this list, too.
It comes in at only 14 oz. It’s also one of the shortest cans on this list, making it a more convenient home defense model.
In the 300 Blackout, Silencerco’s claims that it reduces sound to 119dB holds up.
All in all, the Omega by Silencerco is the runner up on this shortlist of best suppressors.
3. Advanced Armament – Cyclone Suppressor .300 AAC
Key Specs:
- Caliber:
7.62 NATO, 300 BLK
- Weight:
22.4 oz
- Finish:
Cerakote
- Material:
Inconel 718 & 316L SS
Pros:
- Unparalleled affordability.
- Durable machining.
- Reliable functionality.
- High-quality sound reduction.
- Rated to handle automatic fire.
Cons:
- This is the heaviest silencer on this list. It’s still light, but not the lightest.
- At 9.5” this is the longest can on this list. Not a deal-breaker, but overall length impacts handling for any close quarter purposes.
The Advanced Armament – Cyclone Suppressor .300 AAC is a CNC machined aluminum suppressor. It comes in with the tightest metaphorical grouping of function, cost, quality, and longevity.
One should work with ear protection as much as possible (or so I used to hear) but this suppressor is rated to reduce decibel levels by 30-33dB. Paired with the right ammunition, it can really help prevent damage to one's auditory tissue, even without ear protection.
The machined fit threading at ⅝-24 is consistent and tight. The device functions well as a recoil compensator and of course—dampens flash.
At only 22.4 oz of aluminum, it’s a light easy addition to any system, and it costs less than half of similar models.
Simple, reliable, versatile, and affordable. The Cyclone suppressor might not be as easy to maneuver as other models on this list, but it is unquestionably the easiest on ones bottom line.
4. SIG Sauer SRD762-QD
Key Specs:
- Caliber:
5.7mm to .300 WM
- Weight:
14.0 oz
- Dimensions:
1.56” diameter
Pros:
- So many caliber options.
- Quick-release system.
- Short and light can.
- Rated for automatic fire.
Cons:
- Slightly heavier than other models on this list.
Relative newcomer to the suppressor game, SIG Sauer came in guns blazing onto the scene with their specific brand of manufacturing competence.
The SIG Sauer SRD762-QD is built out of the superalloy, Inconel. This leaves the unit with significant resistance to metal fatigue. Ideal for carbines, which are notorious for beating up cans like an old boxing champ coming out of retirement.
Along those lines, in coming in at 17 ounces and only 7 inches long, this model seems perfect for home defense carbines.
On top of all that, Inconel bleeds heat faster than most materials. Because an accidental brand is only funny if it’s between bros (likely under the Kyle banner).
Available from .204 Ruger, up to .308 win mag, so this model’s versatility isn’t in question.
SIG might be new to the silencer game, but they learned from the mistakes of their predecessors and stand on the shoulders of giants. The SRD762-QD is testament to such.
5. Silencerco Saker 7.62mm
Key Specs:
- Caliber:
5.7mm to .300 WM
- Weight:
14.0 oz
- Dimensions:
1.56”
Pros:
- Compatible with a variety of flash hiders, muzzle brakes, and direct-thread mounts.
- Reduces sound signature to hearing safe levels.
- Construction materials and baffle design extend service life and cleaning intervals.
- Full-auto rated.
Cons:
- Adds quite a bit of length to your barrel.
The Silencerco Saker 7.62mm might offer the best sound reduction per dollar on the market. The price is great, and Silencerco makes excellent suppressors.
The flagship feature of this suppressor is the retention system. Silencerco’s Active Spring Retention (ASR) System makes this suppressor compatible with a variety of flash hiders, muzzle brakes, and direct-thread mounts. So, this is a great suppressor for anyone who wants to use a single suppressor for multiple rifles.
And, with subsonic ammunition, this suppressor reduces the sound signature to 132 decibels, which is hearing safe.
Additionally, this suppressor is constructed from stellite cobalt-chromium alloy and stainless steel, which provides optimum corrosion resistance. And, the angled Hoplon baffle design redirects gas to the outside of the baffles to reduce carbon fouling. Both these features extend this suppressor’s lifespan and make for less frequent cleanings.
Lastly, this Silencerco model is rated for full-auto fire. But, even if you don’t have a full-auto rifle, the added durability makes it even more resilient in semi-auto operation.
Unfortunately, all the functionality requires some hardware. So, this suppressor measures 10 inches long, which can be a bit much on longer barrels. This suppressor is best for short-barreled rifles.
But, the longevity and performance are an especially great value for the money.
6. Gemtech HVT-QD Suppressor
Key Specs:
- Caliber:
5.7mm to .300 WM
- Weight:
14.0 oz
- Dimensions:
1.56”
Pros:
- Excellent sound signature reduction.
- Thick, durable cerakote finish improves corrosion and wear resistance.
- Exterior finish reduces visible IR signature.
- Quick detach system is incredibly simple and easy to use.
Cons:
- Quick detach mount is not included.
- Not compact at all.
The Gemtech HVT-QD Suppressor is quiet, yes. But, it also has a few extra features that make it ideal for tactical operations.
First, the noise reduction is 30db, which brings the sound level to hearing safe. And, with proper .300 BLK ammunition, the sound of the bullet in flight is enough to mask the sound signature. In short, this is a really quiet suppressor.
On the outside, this can is cerakoted. It’s a thick, durable finish that reduces visible light glare and the visible IR signature. You could easily add this suppressor to your kit without painting it.
This suppressor is compatible with Gemtech’s quick detach system, which might be the simplest quick detach system on the market. The quick detach mount threads onto the barrel. Then, the suppressor attaches and detaches quickly with a fast, one-handed movement. Unfortunately, the QD adaptor is sold separately.
Also, this is not a compact suppressor. The overall length is 9.2 inches. So, it’s best for short-barreled rifles. Otherwise, it can be a bit unwieldy.
All in all, this might not be the smallest muzzle device, but the performance more than makes up for it. Equipping this suppressor will surely give your blackout rifle an outstanding shooting accuracy.
Aside from suppressors, hearing protection must also be equipped to reduce the noise and avoid unwanted injuries.
7. Dead Air Armament Sandman-S Suppressor
Key Specs:
- Caliber:
7.62 mm
- Weight:
17.7 oz
- Dimensions:
1.5″ Diameter
- Length:
6.8″
Pros:
- Very compact design.
- Reduces sound signature to hearing safe levels.
- Welded, stellite baffles form a solid core for outstanding durability.
- Quick detach system is quick and easy, and maintains your rifle’s precision.
Cons:
- Sound reduction is just barely hearing safe, and only with 300 BLK ammunition.
The Dead Air Armament Sandman-S Suppressor is one of the shortest 300 Blackout suppressors on the market. And, it sacrifices very little performance to get a more compact form factor.
Right up front, this suppressor is just 6.8 inches long, and weighs 18.5 ounces. So, it’s short and light. This is ideal for full-length rifles and those who need to run a lot of accessories on their forend.
And, even though it’s small, it still reduces the sound signature to hearing safe levels (though just barely), if you use subsonic ammunition. However, this suppressor is not hearing safe with 7.62 or .308 rounds.
The baffles are made of stellite and welded into a solid core for maximum durability. And, the end cap is replaceable, in case you drop your suppressor and ding the muzzle or get a baffle strike.
Lastly, the Dead Air quick detach system is quick and easy to use. And, the secure locking mechanism reduces point-of-impact shift and maintains your rifles precision, with or without the suppressor.
So, if you have a full-length rifle that you want to suppress, or if you just want to keep your platform as compact as possible, this is the suppressor to get. Very few suppressors offer such a good combination of size and performance.
8. Surefire SOCOM 7.62-RC2 Suppressor
Key Specs:
- Caliber:
7.62 mm (.308 caliber)
- Weight:
21 oz (595 g)
- Finish:
Black, Dark Earth
- Length:
8.4 in (21.3 cm)
Pros:
- Excellent sound reduction with all compatible calibers.
- Compatible with Surefire SOCOM muzzle devices.
- Fairly compact.
- Minimal shift in point-of-impact.
Cons:
- Expensive.
- Quick detach system only works with Surefire muzzle devices.
The Surefire SOCOM 7.62-RC2 Suppressor is one of the most popular suppressors on the market, despite the relatively high price. That’s because the performance is excellent.
First, this suppressor reduces the sound signature to hearing safe levels, even with higher pressure rounds like 7.62×51 and .308. With subsonic ammunition, 300 BLK is insanely quiet from this suppressor.
Second, this suppressor is compatible with most Surefire SOCOM suppressor adaptors. So, you can mount this suppressor over a flash hider or muzzle brake, if you want. However, you must use a Surefire muzzle device, if you want to attach this suppressor over a muzzle device.
Then, this suppressor is just 8.4 inches long. It’s not the shortest suppressor available. But, it’s impressively short considering the noise reduction. And, it’s compact enough to use with full-length rifles without too much difficulty.
The design and quick detach system also minimize the shift in point-of-impact. This is ideal for rifles with longer barrels, since it helps retain the organic precision, even during suppressed fire.
Unfortunately, the price on this Surefire suppressor is a tad restrictive. But, the performance might be well worth it, especially if you’d like to do long-range shooting with a suppressed rifle. Another piece of advice on enhancing your rifle is to invest on quality buffer spring to improve functionality as well as reduce noise.
The Final Shot
The Gemtech GMT .300 Blackout suppressor checks off all the boxes any shooter could have.
Gemtech GMT .300 Blackout Suppressor
Key Specs:
- Caliber:
300 Blackout
- Weight:
14 oz
- Length:
6.7 in
Pros:
- Design makes it easy to clean.
- Light and durable.
- Very quiet.
- Available in multiple calibers.
Cons:
- Not rated to handle automatic fire.
- Pull weight is above the US Military minimum
- Lightweight. Better for barrel swing and target acquisition.
- Short and narrow. Better for close quarters maneuvering.
- Most drastic reduction in sound.
- Titanium G-Core construction provides a long life.
- Two-piece build makes thorough routine maintenance easy.
- As affordable as some budget models.
No matter your reason—hunting, home defense, hobbyist, etc— one can’t go wrong with any of the equipment on this list. They’ll all mitigate flash, recoil, and sound without breaking the bank. They are all well made, seat firmly, and are built to last. But the Gemtech GMT in .300 Blackout is top shelf. On top of that, Brownells has them available for immediate order. Get yours today and save your hearing and your money. Still confused on what suppressor to buy? Get a help with this buying guide.
You can also check out:
Outstanding 300 Blackout Barrels
Best 300 Blackout Muzzle Brakes in the Market
