• Post category:Flash Hiders
  • Post last modified:August 1, 2022
  • Reading time:21 mins read

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Best 300 Blackout Flash Hiders

There are a lot of flash hiders on the market that can be purchased separately and included in the complete upper receivers, as you can see in our review. If you’re looking for the best 300 Blackout flash hider, look no further than this guide. We’ll take a look at some of the most popular models and help you choose the one that is right for you. So, whether you’re looking for something to reduce recoil or just want a cool-looking muzzle brake, we’ve got you covered. Keep reading to learn more!

Why do we need 300 Blackout Flash Hiders?

The 300 Blackout flash hider is a necessary component for anyone looking to build or upgrade their AR-15 rifle. The flash hider helps to reduce recoil and muzzle flash, making it an important part of any build. The flash hiders are necessary for shooting in dim light conditions or at night, as they help keep night vision intact, decreasing the firing of smoke.  Additionally, it can also help to improve accuracy and provide a more comfortable shooting experience. So, if you’re looking to upgrade your rifle, be sure to consider a flash hider.

Best Pick

Guntec Slim Line Micro Cone Flash Can

Guntec Slim Line Micro Cone Flash Can

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The Micro Cone Flash Can for AR15 pistols tucks in easily on Aero Precision slim (S-series) guards. These flash cans are great for prone shooting due to the closed bottom (no downward ports).

Top 16 300 Blackout Flash Hiders

#1 Stag Arms AR-15 Flash Hider

Stag Arms AR-15 Flash Hider

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#2 Manticore Arms Shadow Flash Hider

Manticore Arms Shadow Flash Hider

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Specification

Cartridge: 9mm Luger
Threads per Inch: 1/2×28
Length: 1.75 in
Weight: 2.4 oz

The Shadow Flash Hider is designed with three short, straight prongs for the flawless performance of flash hiding. This compact and economical version of the Eclipse flash hider will clear any round up to 9mm in diameter (i.e. 300 Blackout, 5.56mm, .22LR, etc). The muzzle devices are marked “MA” and “9mm” as they are compatible with 922r parts by Manticore Arms.

Pros
  • Looks great on the Stribog

  • Helps compensate pretty well

  • Rock-solid chunk of 8620 steel with Rockwell 50C heat treat, machined very clean, and has a nice Black oxide finish

  • For any firearm up to 9mm caliber

  • Easy installation with supplied crush washer

Cons
  • The tuning fork rings

#3 Guntec Slim Line Micro Cone Flash Can

Guntec Slim Line Micro Cone Flash Can

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Specification

Caliber: .308/ 300 AAC Blackout
Threads per Inch: 5/8×24
Gun Model: AR-10
Diameter: 1.25 in
Length: 3.5 in
Weight: 3.4 oz

The Micro Cone Flash Can pushes Flash forward, fitting perfectly on AR15 pistols. There are 2 models available in Flat Dark Earth or Black colors.

Pros
  • Operates flawlessly

  • Good for prone shooting due to the closed bottom (no downward ports)

  • No sweat on tucking under a vast majority of free float guards as it’s 1.35 in, not 1.5 as most silencers, fitting under many guards

  • Micro Version

  • Threaded RIGHT on with zero issues

  • Sturdy Aluminum Body (T6)

  • Pushes blast down range so it’s a bit better to neighbors’ ears

  • Compatible with many Slimline thin free-floating handguards

  • Fits under the guards and extends the muzzle forward

  • Looks pretty mean tucked halfway under the handguard

  • This can tuck nicely behind the hand guard with about an inch of stick out

  • Wrench flats make it easy to attach to a barrel

  • Reduces reasonably the concussion from the short barrel

  • No need for a crush washer

Cons
  • Not yet

#4 Guntec Slim Line Trident Flash Can

Guntec Slim Line Trident Flash Can

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Specification

Cartridge: 300 BLACKOUT/.308 Caliber
Threads per Inch: 5/8×24
Length: 3.5 in
Diameter: 1.25 in
Gun Model: AR-15; AR-10
Color: Black; Flat Dark Earth

The Flash Can with Glass Breaker pushes the Flash forward and scatters it. The muzzle unit is crafted from Aluminum (T6) and Anodized. These cans can be paired with most Slimline Thin Free-Floating Handguards. The flash cans are available in 2 models for AR15 or AR10 guns in Black or Flat Dark Earth correspondingly.

Pros
  • Slim Version

  • Durable T6 Aluminum construction

  • Quality coating

  • Aggressive Machining Design for Glass Breaker

  • Suitable for use on AR15 or AR10 Pistols, depending on the model

Cons
  • Not Yet Rated

#5 GUNTEC Claw Multi-Prong Flash Hider

GUNTEC Claw Multi-Prong Flash Hider

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Specification

Gun Model: AR-10
Caliber: .308 Caliber/300 BLACKOUT
Threads per Inch: 5/8×24
Length: 3.5 in
Weight: 2.4 oz
Diameter: 1.45 in

These Claw Multi-Prong muzzle devices are machined from Aluminum (T6) and covered with a Black Anodized Finish. The Rifle Flash Hiders are designed with a recessed counterbore to mount flush with 15-in handguards (with 16-in barrels).

Pros
  • Claw-Style Door Breacher

  • Lightweight rifle addition

  • Looks badass

  • Solid Aluminum body

Cons
  • Not Yet Rated

#6 GUNTEC USA Cone Flash Can

GUNTEC USA Cone Flash Can

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Specification

Cartridge: .308 Caliber
Threads per Inch: 5/8×24
Gun Model: AR-10
Length: 3.5 in
Diameter: 1.35 in

The AR-10 Cone Flash Can is manufactured of Aluminum (T6), and covered with Black Anodized. These cans push the flash-forward, providing them with efficient functionality.

Pros
  • Sturdy and long-lasting material

  • Good for use on 300 AAC BLACKOUT guns or rifles

  • Ensures the shooters many years of consistency

  • Great for the trick of exceeding the 10.5-in barrel on a 12-in handguard

  • Looks cool

  • Pushes all noise sound forward instead of directing it to the side: it’s a blast to shoot

Cons
  • A bit heavy

#7 GUNTEC USA Predator Flash Hider

GUNTEC USA Predator Flash Hider

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Specification

Caliber: .308 Caliber/300 AAC BLACKOUT
Threads per Inch: 5/8×24
Weight: 4 oz

The A1 Predator Flash Hider is constructed from Steel with slots cut around the body.

The A1 Design Flash Hiders are compatible with any barrel that is outfitted with 5/8×24 threads and supports .308 as well as 300 Blackout.

Pros
  • The US Made

  • Quality and sturdy construction

Cons
  • The Flash Hider in the picture looks more aggressive than the real version for 5-year-olds: too safe with all the tips ground off

#8 Guntec USA Micro Trident Flash Can

Guntec USA Micro Trident Flash Can

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Specification

Cartridge: 9mm Luger; .223 Remington, 5.56x45mm NATO; .300 AAC Blackout
Threads per Inch: 1/2×36; 1/2×28; 5/8×24
Gun Model: AR-15
Length: 2.25 in
Weight: 2.2 oz
Diameter: 1.25 in

The Micro Trident Flash Can is manufactured for AR-15 from T6 Aluminum with Black Anodized Finish. The muzzle device pushes flash forward; it is paired with most Slimline Handguards. There are 3 models available for 9mm Luger, .223 Remington/ 5.56x45mm NATO or .300 AAC Blackout calibers and 1/2×36, 1/2×28, or 5/8×24 threads correspondingly.

Pros
  • Ensures long-lasting service time

  • Sturdy T6 Aluminum Construction

  • Micro Short Version

  • Aggressive surface machining for Glass Breaker

  • Updated Design

Cons
  • Not yet rated

#9 Spikes Tactical Forged Upper Receiver

Spikes Tactical Forged Upper Receiver

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Specification

Cartridge: .300 AAC Blackout
Barrel Length: 16 in
Weight: 4lb 6 oz
Gun Model: M4

The complete upper assemblies are presented with 13 models of different rails and their lengths. The Black Anodized Forged Aluminum Upper Receivers consist of 7075 T6 Construction with A2 Flash Hider, Forward Assist, Ejection Port Door with Spring and Rod, Cold Hammer Forged Barrel, Chrome Lined, 1/7 Twist Rate, .750 Gas Block Seat, M4 Feed Ramps, Mil-Spec Phosphate Coating, SAR3 Rail (6061 T6), Continuous Top Rail, one Free Floating, QD Attachment Points, Stainless Steel Heat Shield, Low Profile Gas Block, Pistol Gas Tube with its Roll Pin, Charging Handle, and M16 Complete BCG.

Pros
  • High Pressure Tested (HPT)

  • Magnetic Particle Inspected (MPI)

  • Ready to drop in and go to work

  • High standard of tolerances

  • Solid Quality assembly

  • The attention to detail is noticeable

  • Top-notch Craftsmanship

  • Black Nitride Inside and Out

  • Mil-Spec Type 3 Coating

  • Phosphate Coated M16 Complete BCG

  • Option of several rails and their lengths

  • Comes with Crush Washer

  • Laser Engraved with ST Spider logo

Cons
  • Not yet

#10 Spikes Tactical 300 Black Out Forged Upper Receiver

Spikes Tactical 300 Black Out Forged Upper Receiver

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Specification

Cartridge: .300 AAC Blackout
Barrel Length: 8.3 in
Gas System Length: Pistol Length
Threads per Inch: 5/8×24
Additional Features: w/10 in BAR2 & Barking Spider
Weight: 3 lb 15 oz

The Spikes Tactical Forged Upper Receiver is equipped with 10-in BAR2 Rail (6061 T6), Gas Tube Roll Pin, Charging Handle, Phosphate Coated M16 Complete BCG, Forward Assist, Ejection Port Door with its Spring and Rod. The 8.3-in Premium Barrel is crafted from Douglas Blank, featuring 1/7 Twist Rate, .750 Gas Block Seat, and M4 NIB Coated Feed Ramps. Continuous Top Rail comes with one Free Floating, Q.D. Attachment Points, and Stainless-Steel Heat Shield.

Pros
  • Sturdy Construction (7075 T6) with Black Anodized

  • Low Profile Gas Block is the maid of Solid Billet Steel (.750 inner diameter)

  • Operates flawlessly

  • Barking Spider Muzzle Device

  • Barrel and Pistol Gas Tube are Black Nitrided In and Out

  • Forged Aluminum with Mil-Spec Type 3 Coating

  • High Pressure Tested (HPT)

  • Magnetic Particle Inspected (MPI)

  • Laser Engraved with ST Spider logo

Cons
  • Not yet

#11 Radical Firearms 16in Round Rail

Radical Firearms 16in Round Rail

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Specification

Caliber: .300 AAC Blackout
Barrel length in inches: 16
Rate of a twist: 1:8 in
Gun Model: AR-15

These AR15 Upper Receivers feature an A2 mil-spec flash hider, pistol length gas system, RF Round Rail with FGS 12in Rail, the 16-in HBAR melonite barrel (made of 4150 CMV steel), 12-in radical firearm billet Forward Guard Shield, Complete bolt carrier assembly, charging handle, M4 feed ramps, low profile micro gas block, forward assist/shell deflector.

Pros
  • Reasonable price

  • Complete assembly

  • Lasts a long time

Cons
  • Heavy

#12 Aero Precision Handguard Complete Upper Receiver

Aero Precision Handguard Complete Upper Receiver

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Specification

Chamber: .300 Blackout
Gun Rail: M-LOK
Muzzle Device: A2 Flash Hider
Gun Model: AR-15
Gas Block Journal: .750 in
Gas System Length: Pistol
Twist Rate: 1:7 Inches
Muzzle: 5/8×24 Threaded
Weight: 29 oz
Barrel Length: 16 in; 10 in; 16 in
Handguard Length: 15 in; 9 in; 12 in

This Complete one-piece free float designed Upper is equipped with Standard A2 Flash Hider, Enhanced Quantum Handguard of choice, .300 Blackout CMV Barrel, Low-Profile Gas Block, Pistol-Length Gas Tube, an addition of built-in anti-rotation tabs, removable 4-slot Picatinny rail section for the front sight and a 7-mounting surface for accessories. The barrels are constructed from 4150 Chrome Moly Vanadium, covered with Corrosion-Resistant QPQ. The Quantum Handguard’s inside diameter (1.78 in) fits most muzzle devices, low-profile gas blocks, and 1.5-in suppressors. The M4E1 Enhanced Assembled Upper Receiver with the installed port door and forward assist is forged from Aluminum (7075 T6); it doesn’t come with BCG or Charging Handle. There are 6 models available in two colors Black or Flat Dark Earth and two finishes correspondingly hard-coat Anodized (Mil 8625 Type 3 Class 2) or Magpul Cerakote.

Pros
  • American made

  • Accepts standard AR15/M16 parts

  • QD attachment points

  • Exceptional fit and finish

  • Precision machined to M4E1 specs

  • Fits not only Aero Precision handguards but also most BAR-system ones

  • M4 feed ramps and Extension

  • HP and MPI Tested

  • Includes Barrel nut and wrench

  • Laser engraved T-marks (Anodized models only)

Cons
  • Not yet

#13 Grid Defense Blackout Upper Receiver

Grid Defense Blackout Upper Receiver

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Specification

Cartridge: .300 AAC Blackout (7.62×35)
Gas System Length: Pistol Length
Barrel Twist Rate: 1-8
Gun Rail: M-LOK
Barrel Length: 10.5 in; 7.5 in; 16 in
Handguard Length: 10.5 in; 9 in; 14 in

This AR15 Upper Receiver with an M-LOK free-float handguard delivers easy accessory attachment and more precise barrel shooting. These uppers come with a barrel, A2 Flash Hider/Dimpled Flash Can. The Mil-Spec Upper Receivers are manufactured from Aluminum (7075 T6), featuring sturdy yet lightweight.

Pros
  • Fits any high-quality AR build

  • Shoots straight with no issues

Cons
  • The finish is scratched pretty easily

#14 TRYBE Defense Complete Upper M-LOK

TRYBE Defense Complete Upper M-LOK

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Specification

Cartridge: .300 AAC Blackout
Overall & Barrel Length: 16 in
Gas System Length: Pistol Length
Handguard Type: Free-Float
Gun Rail: M-LOK
Threads per Inch: 5/8×24
Twist Rate: 1:8 Inches
Muzzle Device: A2 Flash Hider
Gun Type: Rifle
Gun Model: AR-15

The AR-15 Upper includes a 16-in Barrel, made of 4140 CMV (Chrome Moly Vanadium) with Black Nitride Finish, 15-in M-LOK free float Rail, A2 Flash Hider, black nitride fully assembled BCG, a mil-spec low-profile ambidextrous charging handle, and Safety Selectors.

Pros
  • Adjustable Drop-In Triggers

  • Ultra-effective Flash Hider

  • Hyper-accurate, long-lasting Rifle Barrels

  • Durable Grips & Handstops

  • Flat black color no sine

  • Awesome hand guard design

  • Comes with a BCG and charge handle

Cons
  • The powder coating: anything that touches surfaces leaves marks

  • Buying the upper without the charging handle and BCG, any others don’t fit: the area for the CH lock-in is not milled out properly, too thin, and too shallow

#15 Ghost Firearms Vital Blackout Upper

Ghost Firearms Vital Blackout Upper

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Specification

Cartridge: .300 AAC Blackout
Barrel Profile: 4150 Light HBAR
Gas System Length: Pistol Length
Barrel Twist Rate: 1-8
Gun Rail: M-LOK
Included Accessories: A2 Birdcage Flash Hider

The Upper Receiver with A2 Birdcage Flash Hider, 9-in M-Lok Free Float Handguard, and 10.5-in Black Nitride Barrel is chambered in .300 Blackout (7.62×35). The Upper is Mil-Spec 7075 T6 with Matte Black finish and comes without a BCG or CH.

Pros
  • Mil-Spec Hard Coat Anodized

  • Budget price

  • Runs perfect: shot 400 rounds with no hiccups

  • Looks great and shoots fine

  • The hand guard seems high-quality

Cons
  • There is a bit of an unfinished seam around the forward assist hole which is easily scratched

  • The finish is getting damaged easily

  • The dust cover and forward assist look like low-quality parts, that needed replacement

  • Some damage inside: the gas hole is over-drilled almost through the other side

  • Not easy Handguard removal

  • The barrel length is 8.5 inches instead of 7.5: the total length including the muzzle brake is 9.5 inches, which is longer than the one pictured

#16 PRIMARY WEAPONS UPPER RECEIVER

PRIMARY WEAPONS UPPER RECEIVER

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Conclusion

There are many different flash hiders on the market, and it can be hard to choose the right one. We have highlighted some of the best options for you. Our top pick is the #1 TRYBE Defense Complete Upper M-LOK because it is a high-quality product that shoots straight with no issues. It also fits any high-quality AR build. If you are looking for an affordable option, we recommend the #15 Ghost Firearms Vital Blackout Flash Hider.

Note:

While choosing the flash hider, check the compatibility issues: the due thread should match your rifle.

Tags: #best 300 blackout flash hider / #best flash hider for 300 blackout / #best flash hider for 300 blackout pistol / #best flash hider for 300 blackout pistol california legal / #best flash hider for 7.5 300 blackout pistol

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