Improved A2 Birdcage Flash Hider Design With Quick-Detach Suppressor Compatibility
The Breek Arms Sentinel Caged Flash Hider is your go-to solution for serious flash suppression without the tuning fork ring of snag-prone open-prong designs. Built for seamless compatibility with the Breek-LOK 3QD suppressor mounting system, the Sentinel offers all the performance of a traditional flash hider, just with none of the ringing or snag hazards. Its caged design effectively breaks up muzzle flash to preserve night vision and reduce signature in low-light conditions, making it ideal for duty use, home defense, or tactical applications.
Features
- Enclosed (caged) flash hider design eliminates annoying “ping” after firing
- Excellent flash suppression in low-light or night conditions
- Compatible with Breek-LOK 3QD suppressor mount
- .223/5.56, .30 Caliber, and 9MM options
- Machined from heat-treated steel with black nitride finish
- Snag-free, impact-resistant design for hard-use environments
Specifications
- Brand: Breek Arms
- Model: Sentinel Caged Flash Hider for Breek-LOK 3QD
- MPN: BRK4324, BRK4323, BRK4321, and BRK4320
- Thread Options:
- 1/2×28 – .223/5.56
- 1/2×28 – 9MM
- 5/8×24 – 9MM
- 5/8×24 – .30 Cal
- Length: 2.25″
- Material: 4140 Hardened Steel
- Finish: Black Nitride
- Color: Black
- Weight:
- .223/5.56 – 2.0 oz
- .30 Cal – 1.8 oz
How to Connect Muzzle Device to Breek-LOK 3QD Quick Detach Suppressor Mount HUB
- Insert the Muzzle Device into the HUB: Align the muzzle device lugs with the HUB’s
corresponding engagement points. - Engage with a Push and a Twist: Depress inward and rotate the HUB 60° clockwise.
This motion guides the lugs into their locked position. - Secure the Tapered Seat: Complete an additional half rotation. This ensures the HUB’s
internal taper seats firmly against the corresponding taper on the muzzle device,
establishing a secure lock-up.
Products available on this page:
- Breek Arms Sentinel Caged Flash Hider – Multiple Calibers & Threads – Breek-LOK 3QD - 1/2-28 for .223 Cal - Threads: 1/2-28 for .223 Cal | SKU: BRK4320 | UPC: 812296031596
- Breek Arms Sentinel Caged Flash Hider – Multiple Calibers & Threads – Breek-LOK 3QD - 5/8-24 for 9mm - Threads: 5/8-24 for 9mm | SKU: BRK4324 | UPC: 812296031626
- Breek Arms Sentinel Caged Flash Hider – Multiple Calibers & Threads – Breek-LOK 3QD - 1/2-28 for 9mm - Threads: 1/2-28 for 9mm | SKU: BRK4323 | UPC: 812296031619
- Breek Arms Sentinel Caged Flash Hider – Multiple Calibers & Threads – Breek-LOK 3QD - 5/8-24 for .30 Cal - Threads: 5/8-24 for .30 Cal | SKU: BRK4321 | UPC: 812296031602











