The Buck 839 Mini Deploy Blackout Auto is a compact push-button automatic knife designed for discreet everyday carry and dependable performance. It features a 1.875″ CPM S35VN stainless steel blade with a black Cerakote finish, providing strong edge retention along with excellent corrosion and wear resistance. The machined aluminum handle is Cerakote coated for durability and features a stepped lower edge for added grip. A recessed push-button enables quick, controlled deployment, while a removable deep-carry pocket clip keeps the knife secure and low-profile in the pocket.
Key Features
• 1.875″ CPM S35VN stainless steel blade with black Cerakote finish
• Black Cerakote-coated aluminum handle with enhanced grip profile
• Push-button automatic action with removable deep-carry pocket clip
Specifications
| Product Type | Automatic |
|---|---|
| Brand | Buck Knives |
| Product Name | 839 Mini Deploy Blackout |
| Model # | 0839BKS |
| Overall Length (in) | 5.07 |
| Closed Length (in) | 3.20 |
| Blade Length (in) | 1.875 |
| Blade Thickness (in) | 0.12 |
| Blade Material | CPM-S35VN |
| Blade Hardness (HRC) | 58-61 |
| Blade Style | Drop Point |
| Blade Edge | Plain |
| Blade Grind | Flat |
| Blade Finish | Black |
| Handle Material | Aluminum |
| Handle Finish | Black |
| Lock Type | Button Lock |
| Clip Position | Tip Up Right, Left |
| Weight (oz) | 3.20 |
| Origin | USA |
| Blade Range | 1-1.99 |




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