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
Warranty Information
Benchmade warrants this product through the LifeSharp warranty, which covers free lifetime sharpening and mechanical repair. For warranty service, contact Benchmade directly at benchmade.com.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) |