3FO Flash Hider Outside Threaded - .223/5.56, .30 Caliber

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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 turn 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. 

  • Internal Threads Disrupt Gas Expansion Resulting in Less Flash
  • Design: 3FO - 3 Prong Outside Threaded Flash Hider
  • Outside Thread: 13/16 x 16 TPI
  • Material: 4140 Prehard Steel Nitrided
  • Cone Shape Lockup Provides a Tighter & More Concentric Fit
  • Comes with 1 Crush Washer
  • Overall length: 2.36 Inches
  • Weight: 2.6 oz (223/556) 2.3 oz (30 cal)
  • Made in America

Caliber & Thread Options:

  • Cal: 223/556; Thread: 1/2x28
  • Cal: .30; Thread: 5/8x24

See all of our Outside Threaded Muzzle Device designs here!

CFO : Cage Style Flash Hider Outside Threaded (coming soon)

3FO : 3 Prong Flash Hider Outside Threaded

3FO-S : 3 Prong SHORT Flash Hider Outside Threaded

1BO-S : Single Port SHORT Muzzle Brake Outside Threaded (coming soon)

2BO : Two Port Muzzle Brake Outside Threaded (coming soon)

Castle Blast Shield Outside Threaded Forward Concussion Device

16 Reviews Hide Reviews Show Reviews

  • 5
    Fantastic results

    Posted by Rick Lafaille on Oct 21st 2022

    Been waiting a good while for the can to come back in stock, finally got both and I’m super pleased with the results. Keep up the great work Breek Arms!!!

  • 5
    3 Prong Flash Hider

    Posted by Matthew Turnbull on Oct 17th 2022

    Great flash hider for a fraction of the price. Performs flawlessly.

  • 5
    Awesome flash hider

    Posted by Mike on Aug 26th 2022

    This is my second one. Have one on a 11.5 and the new one on my 16”. One of the best flash hiders I’ve ever used very much mitigates all flash coming out of the gun. Also the finish on these is great and tough. As well as looking good they work the best.

  • 5
    Awesome Flash Hider

    Posted by Tim Woodall on Aug 24th 2022

    BreekArms proving the highest priced items aren't always the best! I'll be ordering more

  • 5
    Top notch quality machine work

    Posted by Derick on Aug 23rd 2022

    Love the look Significantly hide’s flash And love how I can screw on the blast forward device on them !!!!!! Would recommend to everyone and break arms shipping CANT be beat I order from everyone ordered products at night 2 days in my mailbox

  • 5
    3fo flash hider

    Posted by Glenn on Aug 18th 2022

    this three-prong fresh hider works extremely well in low light and low light conditions comparable or better to phantom flash hider and the 13x16x16 thread pitch is extremely convenient for cleaning highly recommend