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The Otter Creek Labs OCL-401 OCL Ops/AE muzzle brake combines proven design fundamentals with modern material science to deliver a durable, low-maintenance muzzle device for rifle builders and shooters who demand reliability. Built from H900 heat-treated 17-4 stainless steel and finished in black nitride, this brake resists corrosion and wear in field conditions while maintaining a professional appearance on your rifle.
The OCL-401 is built for real-world application: wrench flats make installation and service straightforward, and a pre-drilled hole accommodates pin-and-weld setups for those building precision rifles under legal restrictions. Whether you're assembling a new rifle, replacing a damaged muzzle device, or upgrading to a more robust option, this brake brings the kind of engineering and material quality that separates purpose-built gear from commodity parts.
Otter Creek Labs has refined this design with both material and finish upgrades that extend service life and reduce maintenance burden—critical when you're running hard in variable conditions. The black nitride finish handles real use without chipping or flaking like cheaper coatings can. If you're serious about what goes on the end of your barrel, this is a sensible choice.
| Material | 17-4 stainless steel, H900 heat-treated |
| Finish | Black nitride |
| Installation Style | Wrench flats; pin-and-weld capable |
| Manufacturer | Otter Creek Labs |
Yes. The brake includes a pre-drilled hole designed to accommodate pin-and-weld installation for permanent attachment, which is a common requirement in certain jurisdictions.
The wrench flats on the OCL-401 allow standard wrench installation. Specific torque specs and detailed installation instructions should be verified with the manufacturer or your gunsmith.
Compatibility and performance data for specific calibers should be confirmed with Otter Creek Labs or your rifle's specifications, as this information is not included in the product details provided.
Black nitride is a proven finish in firearms manufacturing that resists corrosion and wear better than standard paint or bluing. It will hold up well in field use, though like any exposed metal part, regular cleaning will extend its life.

SKU: 144596592 • Width: 2.5in • Height: 0.05in • Depth: 3in • Weight: 0.13oz