AR-15 – Muzzle Brake – littleBOY Hex Brake – 5.56 / .223 – 1/2x28

Phase 5

$110.00

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.

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