Breek Arms 2BO-S Short Single Port Muzzle Brake 223/556 cal 1/2x28 - Thread Outside 13/16x16

Manufactured by Breek Arms
SKU: BRK4047
MPN: BRK4047
Manufactured by Breek Arms
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Experience enhanced control and accuracy with the Breek Arms 2BO-S Short Single Port Muzzle Brake, a precision-engineered device designed to effectively reduce recoil and muzzle rise in your 223/556 AR-15. Its short profile helps minimize the rifle's footprint, maintaining a compact and streamlined appearance. The 2BO-S features 13/16x16 threads on the outside of the device, making it compatible with the Breek Arms Castle Blast Shield (sold separately). Each muzzle brake comes with one crush washer and is proudly made in America.


  • Compatible with 223/556 AR-15s with 5/8x24 threaded barrels
  • Single 90 degree port design to mitigate recoil and muzzle rise
  • External 13/16x16 threads for compatibility with the Breek Arms Castle Blast Shield (sold separately)
  • Short profile helps minimize rifle’s footprint
  • Constructed from durable heat-treated 4140 steel with a nitride finish
  • Includes one crush washer for easy installation
  • Overall length: 1.64 inches
  • Weight: 2.1 ounces
  • Made in America
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BrandBreek Arms
Caliber Gauge.22 Cal
MaterialSteel - 4140 Chrome Moly
Suppressor MountNon-Mount
Thread Pattern1/2 X 28
TypeMuzzle Brake
Weight2.1 oz.
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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