+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device Up to 42% Off, Coupon Available — 4 models

Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device, 9mm, 1/2x28, Black, BRK4042
Breek Arms 3FO-C Flash Hider Cage Style Outside Threaded Muzzle Device, 9mm Luger, 1/2x28 Thread, Black, BRK4042
Breek Arms 3FO-C Flash Hider Cage Style Outside Threaded Muzzle Device, 9mm Luger, 1/2x28 Thread, Black, BRK4042
Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device, 9mm, 1/2x28, Black, BRK4042
1 of 3 images
Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device, 9mm, 1/2x28, Black, BRK4042
Breek Arms 3FO-C Flash Hider Cage Style Outside Threaded Muzzle Device, 9mm Luger, 1/2x28 Thread, Black, BRK4042
2 of 3 images
Breek Arms 3FO-C Flash Hider Cage Style Outside Threaded Muzzle Device, 9mm Luger, 1/2x28 Thread, Black, BRK4042
Breek Arms 3FO-C Flash Hider Cage Style Outside Threaded Muzzle Device, 9mm Luger, 1/2x28 Thread, Black, BRK4042
3 of 3 images
Breek Arms 3FO-C Flash Hider Cage Style Outside Threaded Muzzle Device, 9mm Luger, 1/2x28 Thread, Black, BRK4042

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
Just want to make sure. Will this shoot a .300 Blackout? Manufacturer Answer

Yes, the .300 Blackout is a .30 caliber projectile so the .30 caliber muzzle device option will work, just be sure that the thread pattern matches your barrel. The standard thread pitch for .30 cal is 5/8x24tpi.

by Breek Arms, Manufacturer, January 22, 2025
Will this shoot 5.56 also or exclusively .223 Expert Answer

The Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device model MPN:BRK4039 (.223 Rem) will also be compatible with 5.56 and .22LR.

by Ethan, Gear Expert, July 9, 2024
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Hidden Flashes Crouching Snipers by SilvaCal, Verified Owner, March 31, 2024
Exceeded my expectations. I initially intended to order the 3 prong Breek flash hider and accidentally purchased this one (cage style).
2/2 found this helpful
Helpful Positive Review
Worked well by Thompson, December 23, 2023
Used this for a 350 legend build worked well and as it should..great price. Shipped and received quickly
1/1 found this helpful
Helpful Positive Review
Awesomeness by Jesse O, Verified Owner, April 14, 2024
Great value on this flash hider. You could pay 3x more for a similar hider. Breek Arms did an awesome job on this one, excellent machining and finish. Looks awesome on my rifle.
1/1 found this helpful
Most Recent Reviews
Would not thread by Traeden Barlow, Verified Owner, April 2, 2024
MuzzLe device would not thread onto barrel when I tried to install it. To be sure it was the muzzle devices fault and not the barrel, I tried it on a buddies 9mm pcc which had the same thread pitch and it wouldn't thread onto that either. I was very ...
Read More...
0/5 found this helpful
Most Recent Reviews
Breek Cage Style Flash hider by Normal Shooter, Verified Owner, September 1, 2024
The Breek outside threaded Cage Style Flash hider is their 3 prong Flash hider with the end caged off. What this does is make the same flash suppression as the 3 prong only without the "ping" noise that their 3 prong has. Also good for brush guns as ...
Read More...
Read All 5 Reviews

Deal #3: Up to 15% OFF Firearm Parts

See promotion details.
Eligible models will have a savings offer. Apply coupon and add the item to your cart for savings on that select model! Limited time only. Cannot be combined with other promotions or offers.
Show In Stock Only
4 Models Available

Show with deals only:

Coupon Available
Caliber
All
Threads per Inch
All
Weight
All
Search

ATTENTION! We currently do not ship this product to CA, IL, NY, WA , and U.S. Territories. Please see our policies for more information.

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device

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.image

Specifications for Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device:

Manufacturer: Breek Arms
Color: Black
Finish: Nitrided
Fabric/Material: 4140 Heat Treated
Gun Make: AR Platform
Gun Model: AR-15
Barrel Material: 4140 Steel
Length: 2.1 in
Inner Diameter: 0.38 in
Outer Diameter: 1 in
Condition: New
Country of Origin: USA

Features of Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device

  • Rated for 10.5'' barrels and up.
  • Internal Threads Disrupt Gas Expansion Resulting in Less Flash
  • Design: 3FOC: 3 Prong Caged 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: 1.58 Inches
  • Weight: 2.2 oz (223) 1.9 oz (9mm)

Package Contents:

  • Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device
  • Crush Washer

What firearm models does the manufacturer say Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device is compatible with?

The manufacturer suggests that Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device is compatible with AR-15

Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device Orderable Models

List of Orderable Models

  • Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device, 9mm, 1/2x28, Black, BRK4042 , MPN: BRK4042 , UPC: 812296030995 , Code: 4TY-BFH-3FOCV-BRK4042
  • Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device, 9mm, 5/8x24, Black, BRK4053 , MPN: BRK4053 , UPC: 812296031008 , Code: 4TY-BFH-3FOCV-BRK4053
  • Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device, 223/556, 1/2x28, Black, BRK4039 , MPN: BRK4039 , UPC: 812296030957 , Code: 4TY-BFH-3FOCV-BRK4039
  • Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device, .30 Caliber, 5/8x24, Black, BRK4040 , MPN: BRK4040 , UPC: 812296030988 , Code: 4TY-BFH-3FOCV-BRK4040

Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device Unavailable & Discontinued Models

List of Unorderable Models

  • USED Breek Arms BFO Flash Hider Cage Style Outside Threaded Muzzle Device, 223/556, 1/2x28, Black, BRK4039, EDEMO1, Used, Condition Like New , MPN: BRK4039-EDEMO1 , Code: 4TY-BFH-3FOCV-BRK4039-EDEMO1
Compare (0)
1 item has been added
Add at least two items to compare