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Fortis Manufacturing .300 BLK Muzzle Brake Color: Black, Caliber: .300 AAC Blackout, $3.96 Off and Coupon Available w/ Free S&H

Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride 300BLK-MB
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Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride 300BLK-MB
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Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride 300BLK-MB
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Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride 300BLK-MB
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Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
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Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
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Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
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Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
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Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
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Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
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Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB

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Questions & Answers
Will this work on a 308 ar10? Expert Answer

Yes, the Fortis Manufacturing .300 BLK Muzzle Brake is compatible with calibers that have a bullet diameter of 0.308" or less, which includes .308. So as long as you have 5/8x24 threads, it will fit and function as intended.

by Ethan, Gear Expert, July 28, 2022
work with 7.62x39? Expert Answer

Yes, it should fit if the barrel is 5/8x24 threaded.

by Jonathan D., Gear Expert, March 23, 2020
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Great muzzle brake, but without correct washer by Mukanshin, Verified Owner, June 30, 2020
This its a great brake both in design and functionality. Much better than thr standard A2. However, make sure you purchase your crush washer seperately. The washer in the box is for the 5.56 variant. The cardboard in the box says 5.56, but the mu...
Read More...
5/5 found this helpful
Helpful Negative Review
Just for looks by Just a guy, April 30, 2022
It looks good but functionally wise it’s extremely lacking there’s no difference between this and a standard birdcage except the birdcage will hide the flash at the price point of this go with VG6 or silencerCo
1/1 found this helpful
Most Recent Reviews
Must Buy for any 300 Build by 5.7zerodeuce, Verified Owner, February 28, 2024
First 300 build and I definitely wanted the edge to look as solid as the rest of my build. Adding this break was the cherry on top. Super easy to add, if you don’t have a AR wrench a standard one would do just as well. Testing soon. Updating my revie...
Read More...
Most Recent Reviews
Great products by Msg Airborne, November 7, 2023
Great price, great products, will definitely buy again, will recommend.
Read All 4 Reviews

Up to 14% OFF Select Rifle Parts

See promotion details.
Eligible models will have a savings offer. Apply coupon and add the item to your cart for savings on that select model! Limited time only. Cannot be combined with other promotions or offers.
Color:
Black
Caliber:
.300 AAC Blackout
Finish:
Nitride Coated
Fabric/Material:
4140 Steel
Threads per Inch:
5/8x24
Length:
2.28 in
Weight:
2.8 oz
Included Accessories:
Comes with a crush washer
Condition:
New

Code: 2GN-BMB-MB300-300BLK-MB

MPN: 300BLK-MB

UPC: 810103343924

14%
Product Discount
List: $69.95Save $3.96
$65.99

  • Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB
  • TRYBE Defense Duty Series AR-15 300 AAC Blackout Threaded Barrel, 16 in, Balance Profile, 1/8 Twist, 5/8x24, Black Nitride, TRB-15A38C16NGQ
As low as $185.68
You Save Up to 23%
OP Bucks$3.71
Expert AdviceRequest for QuotePrice Match

Product Info for Fortis Manufacturing .300 BLK Muzzle Brake

Our FortisMuzzleBrakewas inspired by thesharplinesof our brand. Like many of our products, the machining on thisbraketakes a lot longer than the competition. We take our time to create the very best products out there. Sure, we can make it more simple and in the end, fatten the profit margins -- but we owe it to our customers to create not only a product, but an amazing experience. Try the newmuzzlebrakeonce and you'll be glad you did. The performance is unmatched andmuzzlerise is non-existent. Keep your speed and accuracy up. Put more down range and on target.Be sure to verify your thread pitch.image

Specifications for Fortis Manufacturing .300 BLK Muzzle Brake:

Manufacturer: Fortis Manufacturing
Color: Black
Caliber: .300 AAC Blackout
Finish: Nitride Coated
Fabric/Material: 4140 Steel
Threads per Inch: 5/8x24
Length: 2.28 in
Weight: 2.8 oz
Included Accessories: Comes with a crush washer
Condition: New

Features of Fortis Manufacturing .300 BLK Muzzle Brake:

  • 4140 Steel
  • Nitride coated
  • 300BLKOUT
  • 5/8 x 24 TPI
  • Comes with a crush washer
  • 2.8 ounces
  • 2.28 inches
  • Fortis Control Shield compatible
  • Included Accessories:
  • Crush washer

Package Contents:

  • Fortis Manufacturing .300 BLK Muzzle Brake

Fortis Manufacturing .300 BLK Muzzle Brake Orderable Models

List of Orderable Models

  • Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB , MPN: 300BLK-MB , UPC: 810103343924 , Code: 2GN-BMB-MB300-300BLK-MB

Fortis Manufacturing .300 BLK Muzzle Brake Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB , MPN: 300BLK-MB-EDEMO , Code: 2GN-BMB-MB300-300BLK-MB-EDEMO-WP-F
  • USED Fortis Manufacturing Muzzle Brake, .300 BLK, 5/8x24 TPI, Black Nitride, 300BLK-MB, EDEMO4, Used, Condition Like New , MPN: 300BLK-MB-EDEMO4 , Code: 2GN-BMB-MB300-300BLK-MB-EDEMO4
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Last updated 2026-09-07 UTC.