Breek Arms BRK4421 Sentinel Caged | .30 Cal | 5/8×24

The Sentinel Caged is a closed-tine, fully shrouded flash hider engineered to minimize muzzle signature and reduce snagging on gear. It is built specifically for Plan B mounts and pin-and-weld builds, providing compact length and reliable alignment. The design emphasizes NVG-friendly signature reduction while remaining compatible with common .30-caliber platforms that use 5/8×24 TPI threads.

Product Specifications

• The brand is Breek Arms.
• The model is Sentinel Caged.
• The manufacturer part number is BRK4421.
• The product type is a Flash Hider.
• The caliber/gauge is .30 Caliber.
• The thread pattern is 5/8×24 TPI.
• The finish is Nitride.
• The material is Steel.
• The color is Black.
• The design is compatible with Plan B mounts and pin-and-weld builds.
• The device features a closed-tine, fully shrouded profile to reduce snagging.
• The design provides NVG-friendly signature reduction.
• The product category is Muzzle Devices.
• The threads/fit are listed as 5/8-24.
• The UPC is 812296031770.

Compact and purposeful, the Sentinel Caged delivers a snag-resistant muzzle profile and consistent alignment for Plan B or pinned/welded configurations. Its nitride-steel construction and closed-tine shroud make it a practical component for precision-minded builders and shooters who need a low-profile, NVG-considerate muzzle device for .30-caliber systems with 5/8×24 threads.