Whether you favor 300 Blackout for home defense or for a quieter hunt, 300 BLK was designed for use with a suppressor. It can be time-consuming to find the one that is best for you.
We initially spent a combined 28 hours on the range when we originally published this list of the best 300 Blackout suppressors. After completing another 20 hours for the update, several top picks remain, but a few new ones certainly caught our attention.
Table of Contents
- 1 Top 7 300 Blackout Suppressors in 2022
- 2 Factors to Consider
- 3 Is A Firearm Suppressor for 300 BLK Legal?
- 4 Are Suppressors and Silencers The Same?
- 5 FAQs
- 6 And the #1 300 Blackout Suppressor is...
Top 7 300 Blackout Suppressors in 2022
1. Helix IFM7 Suppressor
The Helix IFM7 Suppressor from OSS (who recently rebranded as Huxwrx) remains one of the best 300 Blackout suppressors based on our continued use and a second round of testing.
This suppressor will not affect the operation of your gun as the integrated flush mount system regulates backpressure for flash and sound reduction. Because of the flow-through design, OSS suppressors are not as quiet at the muzzle as others on the market but don’t let that deter you. The Helix IFM7 suppressor is rated to reduce to 135dB for either supersonic or subsonic ammunition.
It features a two-piece construction, allowing easier and more comprehensive routine maintenance of your gun. This suppressor comes standard with the STS muzzle brake but you may need a thread adapter for use with your 300 blk. Manufactured from titanium, stainless steel, aluminum, and cobalt it can outright battle almost any abuse yet it weighs just 24.9 ounces with an overall length of about 8.75″ inches.
2. Silencerco Saker 7.62mm
The Silencerco Saker 7.62mm is also one of the top suppressors that offer an Active Spring Retention (ASR) System. This system makes this high-quality suppressor compatible with various muzzle brakes, flash hiders, and direct-thread mounts.
This 300 AAC Suppressor is constructed from a Stellite cobalt-chromium alloy and stainless steel, providing optimum corrosion resistance. It also sports an angled Hoplon baffle design that redirects gas to the outside of the baffles to reduce carbon fouling.
Lastly, this model is also rated for full-auto fire and resilient in semi-auto operation. However, this suppressor measures 10 inches long, making it ideal for short-barreled rifles only.
3. Surefire SOCOM 7.62-RC2 Suppressor
The Surefire SOCOM 7.62-RC2 Suppressor reduces the sound signature even without ear protection. This suppressor is also compatible with most Surefire SOCOM suppressor adaptors. Therefore, you can mount this suppressor over a flash hider or muzzle brake using a Surefire muzzle device.
This muzzle device/suppressor is just 8.4 inches long and has a quick detach/fast attach system that minimizes the shift in point-of-impact. This suppressor is best for rifles with longer barrels as it helps retain the organic precision, even during a suppressed fire.
4. Helix IFM6 Suppressor
Like our top pick, the OSS Helix IFM6 7.62 suppressor uses an integrated flush mount system to regulate backpressure and reduce sound and flash. It also includes a separate STS Muzzle Brake.
This suppressor reduces up to 132 db. OSS suppressors are not as quiet at the muzzle as other options. This is a great option if you want many of the same benefits as our top pick in a less expensive, slightly smaller package. The IFM6 weighs just 22.8 oz and measures 8 in. long.
5. Specwar 762
The SilencerCo Specwar 762 is a 300 AAC suppressor that quickly and easily mounts SilencerCo’s patented ASR mounting system. It also ensures repeatable POI shift at an affordable rate.
This suppressor is also full-auto rated like most 300 blackout rifle silencers. It uses a patented Active Spring Retention ASR™ mounting system for solid trouble-free lockup, making installation and removal of this unit easier.
As one of the best 300 Blackout suppressors on the market today, Specwar 762 features a durable Stellite baffle stack and minimal point of impact shift. It can handle from 5.56mm rifle to .300 Ultra Mag rifle, from full-auto rated to precision and long-range shooting.
6. Thunder Beast Ultra 5
The Thunder Beast Ultra 5 300 Blackout suppressor is a lightweight, precision rifle suppressor. Its remarkable 5” compactness offers shooters a premium .30 caliber option when minimum size is essential.
This 300 Blackout suppressor is also crafted with lightweight titanium that weighs a mere 7.6 ounces, increasing its overall maneuverability. Also, this suppressor is also CB designated, which refers to Thunder Beast’s compact mount for muzzle brakes—a thread over muzzle brake-type setup.
7. AAC 762-SD
The Advanced Armament AAC 762-SD is a CNC machined aluminum suppressor that comes with the tightest metaphorical grouping of quality, price range, function, and longevity.
This Advanced Armament Corp (AAC) silencer is rated 30-33dB and effectively reduces noise. Its machined-fit threading at ⅝-24 is consistent and tight, making it an excellent recoil compensator.
The AAC 762-SD only weighs 22.4 oz of aluminum, making it lightweight and more affordable, almost less than other models’ price. However, this silencer is long enough to add more overall length to your gun’s barrel.
Factors to Consider
Expect to spend around $1,000-$1,400 for quality 300 Blackout suppressors. The price will depend on the features you are looking for.
Titanium is one of the strongest metals in the world. Not only is its tension strength hard, but the metal also retains some flexibility. This makes it one of the perfect metals to use in many different industries. Using a titanium alloy retains some of the strength of titanium without the high cost. 
Therefore, make sure to look for silencers made of titanium alloys, stainless steel titanium, aluminum, and other lightweight and solid materials. Remember, you’ll want top-tier quality silencers because it will determine how long it will serve your guns.
As mentioned earlier, titanium offers excellent erosion resistance. You’ll want a suppressor or muzzle brake with high-quality materials that can withstand heat, damages, and other abrasive materials. You need to find materials that can battle rust and abuse.
Sand and water usually make these units rust easily. Still, if the suppressor you purchased is made of titanium, you need not worry about getting another because it provides high erosion and oxide resistance. You can put this to good use for a long time.
Spending an ample amount of time checking out the materials (titanium, steel, cobalt chromium alloy, etc) used in a suppressor should be on top of your checklist. It is a no-brainer to know that materials determine their level of quality and durability. Silencers often take severe beatings when a rifle is fired, so looking for the ability to resist any rust, damage, or erosion is needed. Learn how to properly clean your muzzleloader here.
The 300 Blackout rifle caliber is powerful—offering subsonic ammunition and supersonic capabilities. While it is understandably enticing to fire powerful ammunition, they also give off a noise that, if left untreated, can damage your ears.
Installing 300 Blackout rifle suppressors to your rifle could be a hassle, so you also need to consider how easy, or compatible your suppressor is with your gun’s mount. You can also attach a suppressor to a non-threaded barrel. Based on experience, having a suppressor that does not require tools or the skills of a professional gunsmith is ideal.
The ability of the your 300 Blackout rifle suppressor to reduce recoil goes a long way in improving accuracy.
Consider looking for a suppressor that also reduces recoil, which affects the accuracy of your shot, better shot placement, and more humane hunts. The lesser drawback, the more shooter-friendly your rifle will become.
For your 300 BLK (short barrel rifle), check out these suppressors.
After extensive research about the best 300 BLK suppressors on the market, we discovered that most customers like these units because they are quiet, durable, and easy to use. The longevity, durability, functionality, and affordability of these units are enticingly admirable and what most users are looking for.
Read about the top 4 muzzle brakes for 458 SOCOM.
Is A Firearm Suppressor for 300 BLK Legal?
All firearm suppressors are legal depending on the state you live in. As of this writing, 42 states consider suppressors legal, while eight states prohibit the use of these accessories in their area.
The states that prohibit gun suppressors are California, Illinois, Delaware, Hawaii, Massachusetts, New Jersey, New York, and Rhode Island. However, even though your state allows the use of suppressors, it is still wise to double-check the rules and regulations.
Are Suppressors and Silencers The Same?
The terms suppressor and silencer are used interchangeably and both refer to a device that attaches to the barrel of a gun with the purpose of reducing the decibel level of the firearm when it is fired.
The term “silencer” is a bit misleading as there are no devices that will completely muffle the sound a gun makes when fired.
The Gun Control Act states “…‘firearm silencer’ and ‘firearm muffler’ mean any device for silencing, muffling, or diminishing the report of a portable firearm.” 
And the #1 300 Blackout Suppressor is...
Based on our tests, we think the best 300 Blackout suppressor is the Helix IFM7. It is durable, has excellent noise reduction, and easy to use. We like how this gun suppressor is made of stainless steel, titanium, cobalt, and aluminum to provide a longer life span and more resistance to erosion and abuse.
This suppressor is also more compact, making it best as an added accessory without affecting its overall weight and length. It also features a two-piece build for easy cleaning and maintenance.