AR-15 – Muzzle Brake – littleBOY Hex Brake – 5.56 / .223 – 1/2x28
PLEASE DOUBLE CHECK DETAILS AND FITMENT BEFORE PURCHASE.
The Phase 5 Weapon Systems littleBOY Hex Brake is the more compact 5.56 / .223 option in the brand’s hex brake lineup, built for barrels threaded 1/2x28. It uses a single enlarged baffle section to reduce recoil impulse while keeping a shorter overall profile than the FATman.
Fitment
- Fits .223 Remington / 5.56 NATO barrels threaded 1/2x28
- Good fit for AR-15 rifles and similar builds using the correct thread pitch
Does NOT fit
- Does not fit 5/8x24 .30 cal barrels
- Not for mismatched thread pitches or guessing games
What it does
This brake helps manage recoil and muzzle movement while keeping a slightly more compact footprint than the FATman. It is built to help the rifle stay flatter without going full boat-anchor.
Why it’s worth it
This makes sense for the shooter who wants meaningful brake performance but does not want the larger FATman profile. It is still a brake, so expect the usual trade-off: more blast, less movement.
Specs
- Caliber compatibility: .223 Remington / 5.56 NATO
- Thread pitch: 1/2x28
- Material: Steel
- Finish: Mil-spec black parkerized
- Length: 2.5 inches
- Width: 1.26 inches
- Weight: 5.3 oz
- Approximate extension from barrel crown with crush washer installed: 0.85 inch
- Made in USA
What’s included
- 1 muzzle brake
- 1 crush washer
Install notes
Install on the correct 1/2x28 barrel only, time it correctly, and verify alignment before use.
Verify before you buy
Verify your barrel is chambered for .223 / 5.56 and threaded 1/2x28.
⚠ Install & Compatibility Disclaimer
Installation should be performed by a qualified armorer or gunsmith. Improper installation, modification, or use may affect firearm safety and reliability. Buyer is responsible for verifying compatibility, performing proper function testing, and ensuring safe operation.