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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.

It also reduces the muzzle flash seen by the shooter, especially when using a muzzle brake. This is especially important when using a shorter barrel, since the flash is generally larger. Instead of the muzzle flash spreading up and out, it is contained by the blast shield and directed forward. The reduction of the distraction and blinding effect is very noticiable in low light situations.

See All of our Compatible Muzzle Devices

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 even 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 nitride 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 if the barrel
  • 13/16 x 16 tpi threading - works with ALL of our Outside Threaded Muzzle brakes
  • 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!

5 Reviews Hide Reviews Show Reviews

  • 5
    Castle Blast Shield

    Posted by Rhoniel De Lios on Jan 15th 2020

    This device not only gives my rifle that badass look but also works great in directing the muzzle blast forward. This eliminates the concussion for anyone on the side or back of the shooter. The machining and finish is top notch. The slim profile of this device allows it to sit under the handguard which gives the rifle that modern and futuristic look. It’s a perfect match for Breek Arms Wrhwk handguard which I ended up using on my build. Breek Arms has become one of my favorite go-to store for parts and accessories. Good job Breek Arms. Keep up the good work!

  • 5
    Blast Shield

    Posted by Sparkyenfuego on Aug 7th 2019

    Excellent looking blast shield, perfect fit, and fits UNDER or INSIDE slim handguards!

  • 5
    Quality Blast Shield

    Posted by DENNIS JOHNSON on Jul 17th 2019

    Top notch quality and looks. Bought onto for my 300 Blackout to check it out and its even better looking live and on the pistol. Just ordered another for my .223 Wylde pistol. Thanks Breek for the superior product and you now have a customer for life.