FAXON SLIM .620" 3-PORT 5.56 STEEL MUZZLE BRAKE - NITRIDE
Faxon
Faxon SLIM .620" 3-Port 5.56 Muzzle Brake – Nitride
Category: Rifle Parts
Platform: Multi
Series: Muzzle Devices
Caliber/Cartridge: 5.56 NATO / .223
SKU: FFMD556S63PSQPQ | UPC: 816341022331
MSRP: $60.00
The Faxon SLIM .620" 3-Port 5.56 Muzzle Brake was built to solve a real-world problem for legal firearms owners: once you permanently attach (pin & weld) a muzzle device to hit the minimum legal barrel length, you’re often locked into a specific gas block, barrel nut, and handguard setup. The SLIM series changes that.
With its .620" outside diameter, the SLIM is engineered so that gas blocks and barrel nuts can pass over the muzzle device. That means you can permanently attach the brake and still maintain flexibility for future component changes or service—without being boxed into one configuration.
Performance-wise, the three-port design redirects gas to reduce recoil and muzzle rise for faster follow-up shots and improved control. It’s precision-machined from gun barrel quality steel and finished in QPQ (salt bath) nitride for excellent corrosion resistance and durability.
Product Specifications
- Material: Gun Barrel Quality Steel
- Finish: QPQ Salt Bath Nitride
- Thread Pitch: 1/2"-28 TPI
- Caliber: .223 / 5.56 NATO
- Weight: 1.12 oz
- Length: 2.125 in
- Outside Diameter: .620"
- SLIM Profile: Designed so many gas blocks and barrel nuts can fit over the device
Why Choose the SLIM Series?
- Pin & weld friendly profile for long-term build flexibility
- Gas blocks and barrel nuts fit over the muzzle device more easily than traditional brakes
- 3-port design helps reduce recoil and muzzle rise
- Durable QPQ nitride finish for corrosion and wear resistance
Fitment note: Always confirm your specific gas block and barrel nut dimensions before pinning/welding. Component dimensions vary by manufacturer.
Frequently Asked Questions
What does “SLIM .620"” mean?
It refers to the muzzle brake’s outside diameter (.620"). The SLIM series was designed so many gas blocks and barrel nuts can pass over the device, which is especially valuable for pin & weld builds.
Is this muzzle brake good for pin & weld builds?
Yes. The SLIM profile is purpose-built to keep build/service flexibility after permanent attachment—just confirm your specific component dimensions.
What thread pitch does this brake use?
Standard 1/2"-28 TPI, commonly used on .223/5.56 AR barrels.
What finish is on this muzzle brake?
QPQ (salt bath) nitride for corrosion resistance, surface hardness, and long wear life.
Warranty
Faxon Firearms products are backed by our Lifetime Guarantee to the original purchaser against defects in materials and workmanship. For full terms, exclusions, and RMA instructions, visit: Faxon Warranty Policy.