Product Description
The Benchmade Infidel 3300BK is Benchmade's flagship double-action OTF automatic — a 3.91-inch D2 dagger blade that deploys and retracts from the front of the handle with a single slider, built to a tolerance standard that defines what a production OTF can be.
The blade is D2 tool steel with a black coating and a flat-ground double-edged dagger profile. D2 is a high-carbon, high-chromium semi-stainless steel that delivers exceptional wear resistance and edge retention — it holds a working edge longer under hard use than fully stainless production steels, at the cost of requiring occasional oiling to prevent surface oxidation. The double-edged dagger geometry provides equal geometry on both edges with a reinforced centered tip. The 6061-T6 aluminum handle is machined to tight tolerances — the Infidel's reputation is built on a lockup and deployment feel that most production OTFs don't approach. Double-action means the same slider deploys and retracts; no separate retraction button.
Note: Out-the-front automatic knives are subject to federal and state restrictions. Verify your local laws before purchasing. Ships same or next business day from Knifeworks in Columbia, Louisiana.
• Blade Steel: D2 tool steel, black coated — high-carbon, high-chromium semi-stainless; exceptional wear resistance and edge retention vs. fully stainless production steels
• Blade: 3.91" double-edged dagger, flat grind, black coated — centered tip, equal edge geometry on both sides
• Mechanism: Double-action OTF — single slider deploys and retracts; no separate retraction button; blade locks open and closed
• Handle: 6061-T6 aluminum, black anodized — machined to tight tolerances; defines production OTF build quality standards
• Deployment: Out-the-front automatic — blade exits the front of the handle; fastest deployment format available in a folding-style platform
• Clip: Tip-up, reversible — configurable for left- or right-hand carry
• Weight: 3.68 oz
• Warranty: Benchmade LifeSharp warranty — free lifetime sharpening, blade replacement, and mechanical repair
Specifications:
| Product Type | OTF Knife | |
| Brand | Benchmade | |
| Product Name | Infidel | |
| Model # | 3300BK | |
| Overall Length | 9.00 in | |
| Closed Length | 5.10 in | |
| Blade Length | 3.91 in | |
| Blade Thickness | 0.165 in | |
| Blade Material | D2 | |
| Blade Hardness | 58-61HRC | |
| Blade Style | Dagger | |
| Blade Edge | Plain (Double Edge) | |
| Blade Grind | Flat | |
| Blade Finish | Black (Coated) | |
| Handle Material | 6061-T6 Aluminum | |
| Handle Finish | Black | |
| Handle Thickness | 0.118 in | |
| Opener | Slider (Double Action OTF) | |
| Clip Position | Tip-Up, Reversible | |
| Weight | 3.68 oz | |
| Origin | USA | |
| Designer | McHenry & Williams | |
| Lock Type | OTF (Double Action) |