Breek Arms 2BO Double Port Muzzle Brake Outside Threaded – .223/5.56, .30 Caliber



The 2BO Double Port Muzzle brake was designed to reduce recoil and muzzle rise. This allows the shooter to stay on target and take follow-up shots quickly. This is important when speed and accuracy make the difference such as in competitive shooting or self-defense situations.

The brake is machined out of 4140 steel, heat-treated for hardness, and nitrided to offer exceptional strength and durability. The 2BO’s large 90-degree ports mitigate recoil and muzzle rise, countering the force generated through firing. This produces less blowback resulting in higher overall shooter comfort. It features a sleek design that integrates seamlessly with any system, maintaining a clean appearance that looks great on any firearm.

  • Design: 2BO Double Port
  • Outside Thread: 13/16″ x 16 TPI
  • Material: 4140 Heat Treat, Nitrided
  • Comes with 1 Crush Washer
  • Overall length: 2.36 Inches
  • Weight: 2.6 oz (223/556) 2.0 oz (30 cal)
  • Designed and manufactured in America


  • Cal: 223/556; Thread: 1/2×28
  • Cal: 308; Thread: 5/8×24

Breek Arms’ lineup of Outside Threaded Muzzle Devices is an affordable upgrade that gives you the option to run a flash hider or muzzle brake while utilizing our Breek Arms Castle Blast Shield as a forward blast diverter or concussion device. Simply slide the Blast Shield over the outside of the muzzle device and thread the Blast Shield on. This gives the shooter a more pleasant experience when firing especially for shorter platforms that tend to have an overbearing concussion. The added durability of an updated heat-treating process increases reliability for higher muzzle pressures. Installation of all Breek Arms muzzle devices is very straightforward and requires basic hand tools.

Additional information

Size: (Required)

223/556 (1/2x28tpi), 9mm (1/2x28tpi), .30 cal (5/8x24tpi), 9mm (1/2x36tpi)

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