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Breek Arms Sentinel Caged Flash Hider – Multiple Calibers & Threads – Breek-LOK 3QD

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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

  1. Insert the Muzzle Device into the HUB: Align the muzzle device lugs with the HUB’s
    corresponding engagement points.
  2. Engage with a Push and a Twist: Depress inward and rotate the HUB 60° clockwise.
    This motion guides the lugs into their locked position.
  3. 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.

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