Best 300 Blackout Accessories

The 300 AAC Blackout rifle is an excellent firearm that is insanely popular, especially among the civilian population, partially due to its connection to the AR-15 platform. But one of the reasons everyone loves it is because it’s so easy to customize the model. Having a base model firearm isn’t exactly the best way to get the most out of your 300 Blackout, and with the number of accessories available for this particular firearm, you can create a great looking, powerful machine. But how do you know what are the best 300 Blackout accessories to choose from?

A Quick Look At Our 7 Best 300 Blackout Accessories

What to Look for in 300 Blackout Accessories

D&H AR-15 20 Round Magazine

The best place to start your search is by determining the type of accessories and modifications you want. This will help you at least organize your searches and narrow down the playing field. Then, you’ll want to read reviews of various items to discover what other users liked about a particular item and what they found difficult.

You have a number of options, such as the stock and pistol grip, which are some of the primary purchases a gun owner should consider. On top of that, you have the fine-tuning accessories like flash suppressors, muzzle brakes, telescopic sights, and magazines. Finding the right accessories also requires knowing your intent. For example, if you’re going to be night hunting, you’ll want a mountable flashlight.

Top 7 Best 300 Blackout Accessories

To help you think outside the box and discover more of the options, take a look at these reviews of some of the best 300 Blackout accessories available. This will assist you in starting an initial search for a specific type of accessory.

1. VG6 Precision AR-15 Gamma Muzzle Brake

  • Caliber: 30 Caliber
  • Finish: Bead Blasted Stainless Steel
  • Material: Stainless Steel
  • Threads: 5/8-2
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The VG6 Precision AR-15 Gamma Muzzle Brake offers more than just a typical muzzle brake, which makes it an amazing accessory for your 300 Blackout firearm. Because of the power packed by these rounds, especially considering the various supersonic cartridges available, it can be crucial to not only have a muzzle brake but to also help suppress some of the recoil that often comes off firing these larger caliber rounds.

The geometry incorporated into the advanced technological design assists in both reducing muzzle movement and dampening the recoil upon firing, making your shots more comfortable and more accurate all at the same time. The force is redirected through two chambers placed on the side of the muzzle brake as well as slits along the top surface for the ultimate dispersal in multiple directions.

The construction is also incredibly durable and reliable, tooled from 17-4 PH heat treated stainless steel and coated in a hard-black nitride finish. The muzzle brake is capable of working with short barrel rifles and AR style pistols but is best used with barrels ranging from 10.5 to 18.5 inches in length.

Who Should Buy a VG6 Precision AR-15 Gamma Muzzle Brake?

The VG6 Precision AR-15 Gamma Muzzle Brake is perfect for those willing to spend a little extra cash to get more than just reduction in muzzle movement and also want to reduce recoil. It’s ideal for those with 300 Blackout rifles that are full length.


  • Uses standard 5/8”-24 TPI thread
  • Optimized for 300 Blackout (mainly barrels between 10.5 and 18.5 inches)
  • Is a hybrid muzzle brake and compensator


  • Somewhat expensive
  • Requires a bit of break-in

2. Advanced Armament Cyclone Suppressor

  • dB Reduction: 30dB-33dB
  • Finish: Black
  • Material: Stainless Steel
  • Threads: 5/8-24
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The Advanced Armament Cyclone Suppressor is capable of handling smaller, less powerful rounds, as long as you don’t mind excess gas escaping for less sound suppression, but it’s optimized specifically for use with 300 Blackout rifle cartridges. You can imagine the volume of shots fired by something of this power and caliber, and without a suppressor, even ear protection doesn’t stop the reverberation in the air. This suppressor has become one of the most popular suppressors for 300 Blackout rounds, as it is extremely efficient and has excellent sound reduction for 19- and 20-inch barrels, negating the need for ear protection entirely. It’s also great with reducing recoil.

With the added complete suppression of flash signature, users have greater visibility through the riflescope to sight bullet impact. Note that the body is constructed of 316L stainless steel, with Inconel 718 alloy comprising the baffle stack. EDM technology incorporated into the suppressor, as well as a tight fit on standard 5/8×24 thread means you get no shift when firing multiple rounds. Because of the extra weight of the suppressor, barrel harmonics are reduced, leading to greater accuracy overall, negating concerns about the size and heaviness of the suppressor. It’s built with high-temperature aerospace alloys, and its fully CNC automated fusion welded for security and durability.

Who Should Buy an Advanced Armament Cyclone Suppressor?

The Advanced Armament Cyclone Suppressor is ideal for those looking for complete suppression of sound and flash, with extremely reduced recoil and harmonics, who are utilizing especially 300 Blackout rifles and rounds.


  • Reduces recoil and signature of muzzle blast
  • Decibel reduction of 30-33dB
  • Uses standard 5/8”-24 TPI thread


  • Not compact or lightweight

3. D&H AR-15 20 Round Magazine with Red Follower

D&H AR-15 300 AAC Blackout 20 Round Magazine, Black w/ Red Follower - 300BLK-AL-20-BT-RD
  • Caliber: 300 Blackout
  • Finish: black Teflon
  • Material: 6061 T6 Aluminum
  • Thread: 5/20
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The D&H AR-15 20 Round Magazine with Red Follower is easily recognized and made for use specifically with 300 Blackout rounds, though it can also handle feed and functionality for 5.56 rifles. When you intend to be out hunting for long hours, or you need to have ammunition at the ready for competition, it’s important to have reliable extra magazines you can simply plug and play. The black Teflon finish is both aesthetically pleasing and protective, making it durable so it can take a beating and never get damaged.

It’s got a distinct red, anti-tilt follower on the left side that is proprietary to this model so it’s easy to recognize. Internally, geometric improvements have been made to include a shallow rib specifically placed to increase functionality and reliability of use with heavier subsonic 300 Blackout rounds (that don’t have binding). With 6061 T6 aluminum construction and 17-7 PH stainless steel springs that are precompressed, this military grade magazine is built to last.

Who Should Buy a D&H AR-15 20 Round Magazine with Red Follower?

The D&H AR-15 20 Round Magazine with Red Follower is perfect for use with 300 Blackout rounds and is ideal for those who want to carry an extra magazine that can take a beating without damage. If you’re looking for military grade precision and construction, this magazine is right for you.


  • Military grade aluminum & black Teflon finish for durability
  • Purpose built and clearly marked for 300 Blackout rounds
  • Ideal for both subsonic and supersonic rounds


  • May not drop free in some lowers

4. Eotech Whisper Holographic Weapon Sight

  • Battery Life: 600 hours at setting 12
  • Brightness Settings: 20 settings
  • Eye Relief: Unlimited
  • Field of View (100 yds): 30 yds at 4 eye relief
  • Magnification: 1x
  • Night Vision Compatible: No
  • Reticle: 1 MOA Dot, 68 MOA Ring
  • Sight Type: Holographic
  • Weight: 8.0 oz
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The Eotech Whisper Holographic Weapon Sight offers incredible performance for tactical shooting and hunting. Your accuracty improves greatly with any sight, and this particular accessory is one of the best on the market for assuring you hit your mark spot with your 300 Blackout firearm. The 2-dot ballistic drop reticle is precise and ideal for using both subsonic and supersonic 300 Blackout rounds with accuracy.

The same reticle pattern works for both. It incorporates custom laser etching on the hood meant specifically for 300 Blackout firearms. This is the shortest and lightest sight of its kind available, meaning it won’t weigh you down or get in the way of other accessories you intend to mount to your rifle. It’ll mount directly to either a Weaver or MIL-STD 1913 rail, making installation quick and easy.

There are 20 different brightness settings, making it quite versatile for use under different circumstances. If you set the brightness to 12, you’ll get 600 hours of battery life with no problems, due to the quality of the single 123 lithium battery it has. The sight is waterproof for up to 10 feet, in case of accidents, and it gives you a 30-yard field of vision at 100 yards.

Who Should Buy an Eotech Whisper Holographic Weapon Sight?

The Eotech Whisper Holographic Weapon Sight is perfect for the avid hunter or tactical user who needs a long battery life with varied brightness options, and who is looking for a lightweight solution that still offers incredible longevity and durability in construction.


  • Very long battery life (600 hours)
  • Waterproof up to 10 feet
  • Lightweight for less adjustment required


  • Not night vision compatible

5. Sig Sauer Bravo5 Prismatic Sight

  • Battery: CR-2032
  • Eye Relief: 60mm
  • Focal Plane: Fixed
  • Illumination: Yes
  • Max Magnification: 5x
  • Reticle: 300 Blackout Horseshoe Dot
  • Weight: 23.4 oz
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As far as sights go, the Sig Sauer Bravo5 Prismatic Sight is hard to beat, with tons of features that help with both longevity and durability, as well as performance. If you’re looking to improve your accuracy without spending a fortune, you’ll benefit significantly from the use of this particular sight, which is formatted to be ideal with any 300 Blackout firearm. The rugged aluminum housing assures that you can count on this sight to last, no matter how much abuse it takes over time.

In addition, the performance is hard to beat, with reticle options for not just 300 Blackout but also for 5.56 and .308. It’s an intuitive setup, so you don’t have to make a bunch of adjustments to fit your 300 Blackout rifle. The power optics are crystal clear, giving you incredible magnification of up to 5x without losing that clarity. Bright illumination means the ability to see further and in darker places, but this is motion activated so you aren’t calling attention to your whereabouts or wasting battery. Abrasion resistant coatings protect lenses against damage, and the advanced prism and ocular design increases field of vision by 40% over most other models. While the sight is a bit heavy, it offers improved accuracy with minor tweaks.

Who Should Buy a Sig Sauer Bravo5 Prismatic Sight?

The Sig Sauer Bravo5 Prismatic Sight is for anyone who needs incredible performance without concern for having to handle with extreme care. If you need a large field of vision and long battery life for long range hunting, this is a great option for you.


  • Rugged aluminum housing for durability
  • Motion activated illumination
  • Up to 5x magnification


  • Adds over a pound to your setup

6. Sig Sauer Tango4 FFP Rifle Scope

  • Battery: CR-2032
  • Eye Relief: 3.30
  • Focal Plane: First
  • Illumination: Yes
  • Max Magnification: 4x
  • Reticle: 5.56-7.62 Horseshoe Dot
  • Weight: 15.9 oz
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As with sights, Sig Sauer manufactures some of the best rifle scopes on the market, as experts in optics, and the Sig Sauer Tango4 FFP Rifle Scope is no exception. The construction begins with a 30 mm tube, tooled from a single piece of aluminum that is extremely sturdy. The low dispersion glass creates an enhanced clarity, so your viewing is ideal, and a first focal plane reticle creates incredible accuracy regardless of the magnification settings in use.

With a 4x magnification capability, you get great visibility and accuracy for short and mid-range targeting, making it ideal for use when hunting small game or in target practice. You get increased battery life with motion activated illumination and reticle, and you can rest assured of durability even in accidents, with an IPX-7 waterproof rating. Weighing less than a pound, it’s also light enough that you don’t have to worry about making adjustments to your 300 Blackout setup.

Who Should Buy a Sig Sauer Tango4 FFP Rifle Scope?

The Sig Sauer Tango4 FFP Rifle Scope is ideal for those who are into target practice or hunting at short and mid-range, especially for small game. It’s also excellent for anyone looking for a scope that is lighter weight, durable, and saves battery for long term use during an extended hunting trip.


  • Motion activated illumination
  • Water resistant
  • Weighs just under a pound for minimal adjustments required


  • Quite pricey

7. Streamlight TLR-1 Weapon Light

  • Battery: Lithium
  • Color: Black
  • Lumens: 300
  • Style: Gun Mounted, LED
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The Streamlight TLR-1 Weapon Light is highly versatile for use under any condition, with the ability to control output of the high output LED lamp. You get intense white light of up to 300 lumens, which is excellent for visibility. Because it mounts directly to your 300 Blackout rifle, you don’t need to concern yourself with needing extra hands to wield it. In fact, there is a paddle switch that is for ambidextrous use, allowing you to control your light output for either momentary illumination or constant on usage.

The impact resistant lens means it’s highly durable, and there is a deep dish parabolic reflector, which enables you to have consistent illumination not only throughout the battery life but also uniformly in the peripherals, with no hot spots anywhere in your field of vision. Two rapid taps on the paddle also creates a strobing situation, in case of emergency. The entire setup is incredibly durable, constructed from machined 6000 series aluminum that is lightweight as well as resistant to damages. Interchangeable locking keys allow the light to mount to a number of different rails, including the typical Picatinny rail often found on 300 Blackout rifles. With so much to offer, this particular weapon light is extremely useful and a great value for the cost.

Who Should Buy a Streamlight TLR-1 Weapon Light?

The Streamlight TLR-1 Weapon Light is for anyone who wants simple installation and equally easy range of use of a weapon mounted light with numerous settings and extreme durability without an incredibly high cost. It’s great for those who are hard on their equipment but who aren’t in a tactical military situation.


  • Lightweight for minimal adjustment to firearm
  • Solid state or strobe lighting options
  • Direct mount to firearm


  • Not as sturdy as some competitors (but lighter weight)


Best 300 Blackout Pistol - Two pistols in a black background.

Customizing your AR style 300 Blackout rifle is half the fun of owning one, and there are hundreds of options for doing so. Of course, choosing the right accessories to meet your purpose is important, since you don’t want to spend a lot of money on items you won’t use. In addition, if you have too many components that aren’t vital, you may not have room to add those that are really going to pack a punch and make a difference in operation for you. Glancing through these great options can give you a better idea of what each of these accessories can do for you so you have more information on what is going to be important when you get ready to fire your 300 Blackout firearm.

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