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SKU: 419HF-BN-338 5/8x24
Built for hunters and precision shooters who want a brake that installs cleanly and stays aligned, this self-timing system is designed to simplify setup without tools. It uses a universal adapter and a knurled collar arrangement that lets you level the brake before locking it in place, while the modular design supports multiple muzzle attachments. The brake features rearward-facing ports and a proprietary port layout intended to manage recoil and muzzle rise, with caliber-marked orientation for easier setup. Available in multiple caliber options and thread patterns, it suits rifles where repeatable removal and reinstallation matter.
Tool-free Timing
Uses a simple knurled nut;
Self-timing Design
Helps keep port alignment consistent
Universal Adapter
Stays on the barrel, simplifying
Available Caliber
Options cover .223/6mm through .338
Rearward-facing Ports
Proprietary port design are intended
| 2236mm Compatibility | Up to and including 0.243 (6mm) |
|---|---|
| 338 Compatibility | Up to and including 0.338 |
| 6 5mm Compatibility | Up to and including 0.264 (6.5mm) |
| 7mm308 Compatibility | Up to and including 0.308 |
| Brake Finish | Black Nitride, Raw stainless |
| Brake Material | Heat treated 17-4PH Stainless Steel |
| Brake Outer Diameter | 1 OD |
| Brake Port Count | 3-port design |
| Caliber Selections | 223/6mm, 6.5mm, 7mm/308, 338 |
| Collar Outer Diameter | 1.1 OD |
| Concentric Threads | Yes |
| Engraving | Caliber marking and horizontal leveling line |
| Installation | Tool-free brake timing with knurled nut; universal adapter torqued onto barrel with a 5/8 wrench |
| Large Magnum Brake Port Count | 4-port larger diameter (planned) |
| Made In Usa | Yes |
| Manufacturing Location | NW Ohio |
| Port Design | Rearward facing ports |
| Product Type | Self-Timing Muzzle Brake |
| Return To Zero | Excellent |
| System | HELLFIRE Modular Brake System |
| Taper Surface | Yes |
| Tool Free Use | Yes |
| Top Porting | Not used |
| Universal Adapter Finish | Black Nitrided |
| Universal Adapter Fit | Class 3 fit |
| Universal Adapter Sizes | 5/8-24, 1/2-28 |
The product is offered in four caliber selections: 223/6mm, 6.5mm, 7mm/308, and 338. The description says each option covers bullet calibers up to the listed maximum diameter for that selection.
No tools are needed to time the brake. The description says it uses a simple round knurled nut, and the brake is rotated into position by hand before the collar is tightened.
The description says return to zero is excellent, meaning removal and reinstallation should not require a zero change. That is the manufacturer’s stated claim in the product data.
The universal adapter is available in 5/8-24 and 1/2-28. The description also notes both are class 3 fit.
The brake is listed in Black Nitride finish or raw stainless, while all universal adapters come black nitrided.