Breek Arms Plan B Sentinel Caged Flash Hider - 1/2x28 - 5.56 NATO - Peel Washer Included
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- Free standard shipping on orders $139+ details
- 90-day no-hassle returns policy
- Limited Warranty what it covers
Product description
Breek Arms Plan B Sentinel Caged Flash Hider with Pin-and-Weld Capability
Features
- Closed-tine, fully shrouded design for superior flash suppression
- Engineered for pin-and-weld on 14.5″ barrels to meet 16″ federal requirement
- Plan B/Atlas mounting system for suppressor compatibility
- NVG-friendly signature reduction with reduced snagging profile
- 4140 hardened steel with nitride finish
The Plan B Sentinel solves the problem of needing effective flash suppression for night vision operations while maintaining suppressor compatibility and pin-and-weld capability for 14.5″ barrel builds. It works exceptionally well for tactical applications, night shooting, and builds requiring federal compliance without SBR registration. The closed-tine shrouded design sets it apart by eliminating snag hazards while providing superior flash suppression and NVG-compatible signature reduction in a compact package.
Note: Sentinel flash hiders using .223/5.56 ammunition are tested and rated for 7.5″ barrels and longer. Use of peel washers or shims for installation is highly recommended.
Specifications
- Brand: Breek Arms
- Model: Plan B Sentinel Caged Flash Hider
- MPN: BRK4420
- Caliber: .223/5.56
- Thread: 1/2-28
- Overall Length: 2.15″
- Weight: 2.2 oz.
- Material: 4140 Hardened Steel
- Finish: Nitride
- Suppressor Mount: Plan B/Atlas
- 9mm Compatible: Yes (0.369″ exit hole)
- Pin-and-Weld Ready: Yes (14.5″ barrels)
- Minimum Barrel Length: 7.5″ (.223/5.56 ammunition)
- Made in USA
What’s Included?
- 1x Plan B Sentinel Caged Flash Hider
- 1x Peel Washer
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Questions & Answers
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Warranty & returns
Limited Warranty
Breek Arms products are covered by a limited warranty against defects in materials and workmanship. If your product is found to be defective under normal use, Breek Arms will repair or replace it at their discretion. This warranty does not cover damage caused by misuse, modification, or normal wear and tear.
90-day no-hassle returns
The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.
If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.










