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: 419BK-STSS-6MM 5/8-24
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 for timing. The modular design uses a universal adapter and a brake/collar assembly, with caliber options covering common hunting and rifle cartridges within the listed ranges. Its rearward-facing port design is intended to reduce recoil and help control muzzle rise, while the engraved top reference and leveling line support correct orientation during installation. Available in Black Nitride or raw stainless finishes, it is a practical choice for rifles where repeatable removal and reinstallation matter.
Tool-free Timing
A simple knurled nut makes
Brake Body
Will not rotate while the
Universal Adapter
Stays on the barrel for
Four Caliber
Selections simplify fitment across multiple
Rearward-facing Ports
Proprietary port design are built
| Brake Od | 1 OD |
|---|---|
| Brake Port Count | 3-port design |
| Brake Type | Self Timing Brake |
| Caliber Selections | 223/6mm, 6.5mm, 7mm/308, 338 |
| Collar Od | 1.1 OD |
| Compatible Caliber Range 2236mm | Up to and including 0.243 (6mm) |
| Compatible Caliber Range 338 | Up to and including 0.338 |
| Compatible Caliber Range 6 5mm | Up to and including 0.264 (6.5mm) |
| Compatible Caliber Range 7mm308 | Up to and including 0.308 |
| Country Of Origin | USA |
| Finish Options | Black Nitride, Raw stainless |
| Installation | Tool-free timing with a round knurled nut; universal adapter torqued onto barrel with a 5/8 wrench |
| Large Magnum Configuration | 4-port larger diameter planned |
| Made In Usa | 100% Made in USA |
| Manufacturing Location | NW Ohio |
| Material | Heat treated 17-4PH Stainless Steel |
| Orientation Marking | Caliber engraving and horizontal leveling line |
| Port Design | Rearward facing ports |
| Recoil Reduction Claim | 52% recoil reduction on a 6.5 Creedmoor test rifle |
| Return To Zero | Excellent |
| System | HELLFIRE Modular Brake System |
| Thread Size 338 | 5/8-24 is still max thread size |
| Top Porting | No |
| Universal Adapter Finish | Black Nitride |
| Universal Adapter Fit | Class 3 fit |
| Universal Adapter Thread Sizes | 5/8-24, 1/2-28 |
| Universal Adapter Use | Tool free use of multiple muzzle attachments |
The product data lists four caliber selections: 223/6mm, 6.5mm, 7mm/308, and 338. Each is described as covering bullet calibers up to the stated maximum diameter.
No. The description says the brake uses a simple round knurled nut that requires no tools to time the brake.
The universal adapter is available in 5/8-24 and 1/2-28. The data also notes both are class 3 fit.
The product description says return to zero is excellent, meaning removal and reinstallation will not require a zero change.
The brake is listed in Black Nitride finish or raw stainless, while all universal adapters come Black Nitrided to prevent galling.