Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Government Export Restriction Government Export Restriction
Questions & Answers
Will this fit a regular 5.56 barrel Manufacturer Answer

This will not thread directly onto a barrel, you will have to install a Breek Arms Outside Threaded muzzle device of your choice and then you can attach the Castle Blast Shield to the muzzle device. The thread pitch of the Castle Blast Shield is 13/16" x 16 TPI.

by Breek Arms, Manufacturer, December 4, 2024
Will this still allow a Breek Arms 3-prong flash hider to still adequately hide flash? Manufacturer Answer

If your flash hider is able to hide the flash on your build then adding a Blast Shield should not change that. Adding a Blast Shield does affect the gas dispersion process slightly, but it should not reduce the flash hider's effectiveness.

by Breek Arms, Manufacturer, January 2, 2025
Customer Reviews
Helpful Positive Review
Exceptional quality by JET, October 3, 2022
I was looking for a small light weight blast shield to pair with my AR9. There arent a lot of reviews out there so I thought I'd give Breek Arms a try. I purchased the shield with a 9mm flash hider and was very pleased with the quality and finish of ...
Read More...
6/6 found this helpful
Helpful Positive Review
Castle blast shield by N, March 6, 2024
Works as advertised, threaded right on. Really tamed a 10.5 that was a little bit absurd in its concussion. Amazing price point, the surefire 3 prong/warden combo is unreasonable priced, this fills that niche' at a price that isn't hard to swallow.
2/2 found this helpful
Helpful Positive Review
small and compact by Adrian, February 28, 2024
For my needs until I buy a suppressor.I have 2 rifles and I can swap easily using this on the flash hiders.
1/2 found this helpful
Helpful Positive Review
Outstanding value by Centauro97, Verified Owner, March 31, 2024
For the price, it's an outstanding value. Less than half the cost of some of the other brands, with no difference in function that I can tell. Nobody shooting beside me is complaining about the covered brake I'm using.
2/2 found this helpful
Helpful Positive Review
Functions as expected by Easystreet, Verified Owner, May 2, 2023
This is my 5th one. Simple solution that is well made and stays put. Grts a cool looking bronze patina ince afew hundred rouds pass through it and you clean it. No degredation that I can see or feel. Great mtch with all breek arms muzzle devices.
2/2 found this helpful
Helpful Positive Review
This thing is just cool by BillyBob, Verified Owner, March 28, 2022
This thing is just cool, looks cool. Functions just as it should. The Breek markings dont stand out as much as the picture but still a really nice piece. Breek arms does a great job making affordable parts that are straight up awesome! Love it!
1/1 found this helpful
Read All 11 Reviews
Threads per Inch:
1-3/16x16
Caliber:
Universal
Length:
2.15 in
Weight:
1.6 oz
Fit:
AR-15/M16
Outer Diameter:
1.26 in
Gun Model:
AR-15
Condition:
Used
Condition Quality:
Excellent
Color:
Black
Condition Details:
Inspect And Rebox
Country of Origin:
USA
Diameter:
1.26 in
Fabric/Material:
6061 Aluminum
Gun Make:
AR Platform

Code: 4TY-MD3-CBS15MT-BRK4038-EDEMO-RE-B

MPN: BRK4038-EDEMO

Product No Longer Available

Product Info for Breek Arms Castle Blast Shield C Style Concussion Muzzle Device

Breek's new slim-line Castle Blast Shield is a muzzle accessory designed to reduce the felt blast noise and concussion for the shooter and nearby operators while still focusing on keeping things compact and lightweight. The blast shield compresses tight to the back of the muzzle brake and directs the noise forward, downrange from the shooter. Anyone nearby on the range or in the field will appreciate the blast being re-directed away from them, improving their hearing and even reducing the burst of gas that can be felt from certain muzzle brake designs when a secondary operator is close.image

With the Blast Shield installed it will reduce your muzzle brake's effectiveness. But if you are shooting alone or just don't care about the extra noise you are making, it can easily be threaded off and back on as desired. This allows you to pick the benefits you want in any circumstance, without requiring any tools to change anything out.

The 1.26'' outside diameter design allows for the Blast Shield to fit inside most slim-line handguards. And coming in at only 2.15 inches long it adds negligible overall length to your rifle. The 6061 aluminum body and anodized finish of our blast device is made to last. And while it is strong, it is also extremely light weight coming in at a mere 1.6 ounces!

Key Features:

-1.26'' outside diameter fits inside almost any handguard, even slim-line handguards

-2.15'' length is even with the end of the muzzle device, adding negligible overall length to the rifle

-1.6 ounces - Incredibly light, especially important for a component that is out at the end of the barrel

-13/16 x 16 tpi threading - works with ALL of our Outside Threaded Muzzle Devices

-Design re-directs noise and gasses away from the shooter

Note: The Blast Shield does not protect your ears from the full noise of shooting - it is not a suppressor. Always wear ear protection when shooting!

Features of Breek Arms Castle Blast Shield C Style Concussion Muzzle Device

  • 1.26'' outside diameter fits inside almost any handguard, even slimline handguards
  • 2.15'' length is even with the end of the muzzle device, adding negligible overall length to the rifle
  • 1.6 ounces Incredibly light, especially important for a component that is out at the end of the barrel
  • 13/16 x 16 tpi threading works with ALL of our Outside Threaded Muzzle Devices
  • Design redirects noise and gasses away from the shooter

Package Contents:

  • Breek Arms Castle Blast Shield C Style Concussion Muzzle Device
  • Crush Washer

Gunsmithing Tools & Accessories

1–15 / 15
Previous
Next

Gun Triggers

1–16 / 16
Previous
Next

Magazine and Accessories

1–21 / 21
Previous
Next

Gun Parts and Accessories

1–30 / 30
Previous
Next

Gun Sights

1–18 / 18
Previous
Next

Gun Barrels

1–12 / 12
PreviousNext

Gun Stocks

1–16 / 16
Previous
Next

Mounts, Rings and Accessories

1–20 / 20
Previous
Next

Related Products to Breek Arms Castle Blast Shield C Style Concussion Muzzle Device

Breek Arms Castle Blast Shield C Style Concussion Muzzle Device Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Breek Arms Castle Blast Shield C Style Concussion Muzzle Device, 13/16x16 Thread, Black, BRK4038 , MPN: BRK4038-EDEMO , Code: 4TY-MD3-CBS15MT-BRK4038-EDEMO-RE-B
  • USED Breek Arms Castle Blast Shield C Style Concussion Muzzle Device, 13/16x16 Thread, Black, BRK4038, EDEMO2, Used, Condition Like New , MPN: BRK4038-EDEMO2 , Code: 4TY-MD3-CBS15MT-BRK4038-EDEMO2
  • USED Breek Arms Castle Blast Shield C Style Concussion Muzzle Device, 13/16x16 Thread, Black, BRK4038, EDEMO3, Used, Condition Good , MPN: BRK4038-EDEMO3 , Code: 4TY-MD3-CBS15MT-BRK4038-EDEMO3
  • Breek Arms Castle Blast Shield C Style Concussion Muzzle Device, 13/16x16 Thread, Black, BRK4038 , MPN: BRK4038 , UPC: 812296030667 , Code: 4TY-MD3-CBS15MT-BRK4038
  • Breek Arms OPMOD AR15 Castle Blast Shield For Outside Threaded Muzzle Device, 13/16x16, Black , MPN: BRK4054-KIT2023 , Code: 4TY-MD3-CBS15MT-BRK4054-KIT2023
Compare (0)