Breek Arms BFO Outside Threaded Cage Flash Hider for .223/5.56 – 1/2×28

SKU: BRK4039

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Breek Arms Blast Shield

Breek Arms Castle Blast Shield for Outside Threaded Muzzle Devices


Closed Tine Flash Hider with Outside Threads

This flash hider is improvement on Breek Arms’ 3 prong flash hider designs, while retaining compatibility with their outside thread designs. The BFO flash hider is a closed-tine design, which will not having the “tuning fork” effect common in 3 prong flash hiders. In addition to hiding flash effectively, you can also direct noise downrange with the addition of the Castle Blast Shield.

This muzzle device adds about 1.7 inches to the barrel, which is just about perfect for pinning and welding to a 14.5 inch barrel. If you’re looking at having some flexibility between flash hiding and sound reduction at your ear, this muzzle device is an excellent candidate.

Includes 1 crush washer for easy timing and installation.  Does not include the Castle Blast Shield.


  • Intended Caliber: .223 Remington/5.56 NATO
  • Muzzle Thread: 1/2 x 28 TPI
  • Outside Thread: 13/16 x 16 TPI
  • Material: Hardened 4140 Steel
  • Finish: Black Nitride
  • Comes with 1 Crush Washer
  • Overall length: 2.36″
  • Weight: 2.4 oz.
  • Length added to barrel: Approximately 1.7 inches

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