Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
You'll be taken to Mile High Shooting Accessories to complete your purchase.
Hunter's Outpost earns a commission from affiliate links at no extra cost to you.
SKU: 419HF-BN-308 M18X1.5
Built for hunters and precision shooters who want a muzzle device that installs cleanly and times without tools, this brake is part of a modular system designed for straightforward setup and repeatable removal and reinstallation. Its rearward-facing port design is intended to help reduce recoil and control muzzle rise, while the self-timing collar and universal adapter simplify alignment on the barrel. The system is offered in multiple caliber selections and thread options, giving it a practical fit for a range of rifle setups without adding unnecessary complexity. It is a specialized accessory, so the main trade-off is that it serves a focused role rather than offering a general-purpose muzzle solution.
Tool-free Timing
A knurled nut simplifies installation
Brake Stays
Fixed while torquing the collar,
Universal Adapter
Supports multiple muzzle attachments within
Available Caliber
Options cover .223/6mm through .338
Rearward-facing Ports
Proprietary design are intended to
| 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 |
| Adapter Removal Required For Reinstallation | No |
| Brake Finish Options | Black Nitride, Raw Stainless |
| Brake Material | Heat treated 17-4PH Stainless Steel |
| Brake Od | 1 OD |
| Caliber Options | 223/6mm, 6.5mm, 7mm/308, 338 |
| Cnc Manufactured | Yes |
| Collar Od | 1.1 OD |
| Galling Prevention | Yes |
| Installation Notes | Universal adapter torqued onto barrel with a 5/8 wrench; brake/collar assembly left-hand threads onto adapter; collar tightened by hand |
| Large Magnum Port Count | 4-port larger diameter |
| Made In Usa | Yes |
| Manufactured In | NW Ohio |
| Muzzle Rise Control | Yes |
| Orientation Markings | Caliber engraving and horizontal leveling line |
| Port Count | 3-port design |
| Port Design | Rearward facing ports |
| Product Type | Muzzle Brake |
| Recoil Reduction Test Result | 52% on a 6.5 Creedmoor test rifle |
| Return To Zero | Excellent |
| Self Timing | Yes |
| System | HELLFIRE Modular Brake System |
| Thread Fit | Class 3 fit |
| Thread Sizes | 5/8-24, 1/2-28 |
| Tool Free Timing | Yes |
| Tool Requirement For Timing | No |
| Top Porting | Not used |
| Universal Adapter Finish | Black Nitrided |
| Universal Adapter Included | Yes |
The HELLFIRE brake is offered in four caliber selections: 223/6mm, 6.5mm, 7mm/308, and 338. The product data lists example cartridges for each selection, so buyers can match the brake to their rifle’s bullet caliber range.
No. The product description says the brake uses a simple round knurled nut that requires no tools to time the brake.
The product data 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 provided description.
The universal adapter is available in 5/8-24 and 1/2-28. The description also states both are class 3 fit.
The brake is listed in Black Nitride finish or raw stainless, while all universal adapters come Black Nitrided to prevent galling.