Phase 5 FATman 1/2-28 Hex Brake, 5.56mm/.223 Rem - FATman-556
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Phase 5 Weapon Systems
Overview
The Phase 5 FATman 1/2-28 Hex Brake is a muzzle brake designed specifically for 5.56 NATO caliber firearms. It effectively reduces recoil and muzzle rise, allowing for quicker follow-up shots and improved control during rapid fire. This muzzle device is commonly found on carbine-length gas system builds, making it a popular choice for those looking to enhance the performance of their AR-15.
Specifications
Build history on GunPartPicker
Builders on GunPartPicker first added the Phase 5 FATman 1/2-28 Hex Brake, 5.56mm/.223 Rem - FATman-556 to a build in January 2026.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 5 of the 6 retailers we track have it in stock. It dipped to $115 at GritR Sports for a stretch in August 2026, under its usual $120, so sales do come around. Buying today, the lowest price is $120 at Optics Planet.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 3 builds that include this one
Wilson Combat AR-15 Billet Upper Receiver
Wilson Combat Wc-15 Billet Lower Receiver
LBE Unlimited AR-15 Magazine Catch Assembly, Black - ARMCASY
Phase 5 Tactical AR-15 90 Degree Ambi Safety Selector Black
Phase 5 Version 2 Extended Bolt Release, 2.15" - EBRV2
Strike Industries Phantom Latchless Ambidextrous Charging Handle, Black - SI-AR-PHANTOM-CH-BK
Builds Featuring This Part
See all 1 →Builds in the community that include the Phase 5 FATman 1/2-28 Hex Brake, 5.56mm/.223 Rem - FATman-556
| Build | Parts | Total |
|---|---|---|
 | 26 | $1826.83 |
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