AR-10 / .308 – Muzzle Brake – FATman Hex Brake – 7.62 / .308 / 300 BLK – 5/8x24
PLEASE DOUBLE CHECK DETAILS AND FITMENT BEFORE PURCHASE.
The Phase 5 Weapon Systems FATman Hex Brake in the .30 cal pattern is built for rifles using 5/8x24 threads and supports common chamberings like .308 Winchester, 7.62 NATO, and .300 Blackout. This is the larger-thread version, not the 5.56 model. It uses a steel body, large ventilated chambers, and top porting to help flatten the rifle and cut recoil impulse.
Fitment
- Fits barrels threaded 5/8x24
- Verified caliber family support: .308 Winchester, 7.62 NATO, .300 Blackout
Does NOT fit
- Does not fit 1/2x28 .223 / 5.56 barrels
- Do not buy this just because the threads “look close enough.” That is how people earn expensive lessons.
What it does
This brake redirects gas to reduce felt recoil and muzzle climb on harder-hitting rifles. It is meant to keep the gun flatter and more predictable, especially when you are shooting for speed or trying to stay on target through the shot.
Why it’s worth it
On heavier calibers, a real brake earns its paycheck. This one is for the shooter who wants recoil control and does not mind the added blast that comes with getting the job done.
Specs
- Caliber compatibility: .308 Winchester, 7.62 NATO, .300 Blackout
- Thread pitch: 5/8x24 RH
- Material: Steel
- Finish: Black parkerized / mil-spec black parkerized
- Length: 3 inches
- Weight: 5.9 oz
- Made in USA
What’s included
- 1 muzzle brake
- 1 crush washer
Install notes
Verify thread pitch and caliber before install, time the brake correctly, and check bore alignment. If this sentence sounds boring, good. Boring is how you keep muzzle devices from becoming chaos.
Verify before you buy
Verify your barrel uses 5/8x24 threads and that your setup matches the listed caliber family.
⚠ 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.