Description
The Phase 5 littleBOY Hex Brake is a compact, Hex-pattern muzzle brake engineered from the original FATman Hex design. Weighing approximately 5.3 ounces, this smaller-profile brake provides compensation through a ventilated baffle and chamber layout while minimizing impact to barrel harmonics. The littleBOY’s chamber wall sits close to the barrel crown plane to help preserve accuracy in competition and precision rifle applications.
Key Specifications
- The caliber is .223 REM / 5.56 NATO.
- The thread pattern is 1/2×28.
- The finish is Parkerized.
- The model name is littleBOY.
- The product type is a Muzzle Brake.
- The subcategory is listed as Muzzle Devices.
- The design incorporates one large ventilated (FAT) baffle section and chamber for compensation.
- The unit weight is approximately 5.3 ounces as a compact variant of the FATman Hex Brake.
- The design places the chamber wall close to the barrel crown plane to maintain accuracy.
Compact and purpose-built, the Phase 5 littleBOY Hex Brake delivers a Hex-style profile and functional compensation suitable for competitive and precision shooters who demand a low-profile muzzle device that respects barrel harmonics. Its parkerized finish and 1/2×28 thread pattern make it a practical option for many .223/5.56 builds seeking a refined balance of control and accuracy.






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