Fixed blades and folding knives usually live in separate conversations. The Kizer Harpoon family refuses that split.
The Harpoon started life as a fixed blade, a compact drop-point design by James Buckley of Maverick Customs. It then spawned a three-inch Mini Harpoon in a ladder of increasingly exotic steels, and most recently a folding member, the Harpoon Fold, built on a titanium frame lock. Three formats, one silhouette, one designer.
That makes the family unusually useful to compare, because the knives share a shape and differ almost entirely in how you carry them and what steel you get.
Where the Harpoon came from
The full-size Harpoon is a Kizer collaboration with Maverick Customs, the small-batch shop run by James Buckley in Kentucky. The design brief was a compact fixed blade that works for everyday carry and general outdoor utility, and the result is a knife that prioritizes control over size. You can confirm current listings on Kizer's official site.
The signature Harpoon detail shows up across the family: a harpoon-style blade with a swedge near the tip and a dip in the spine that lets you rest a thumb or index finger for detailed work. It is the kind of geometry that reads as decorative until you actually need to choke up on a blade, and then it earns its place. If fixed blades are new to you, our fixed blade vs folding knife comparison covers the carry trade-offs in detail.
Full-size Harpoon: the original fixed blade
The standard Harpoon is the simplest knife in the family and the one everything else descends from.
- Blade length: 3.84 in / 97.5 mm
- Overall length: 7.32 in / 186 mm
- Blade thickness: 0.14 in / 3.5 mm
- Blade steel: D2 carbon steel, black powder coat
- Handle: tapered Micarta with a finger choil
- Weight: 4.2 oz / 119 g
- Sheath: Kydex with two button snaps
- Price: $59
The D2 blade holds a working edge well and is straightforward to sharpen, which is why it shows up on so many utility knives. The tapered Micarta handle and finger choil let you move your grip forward for controlled cuts, and the Kydex sheath is set up for belt, pack or strap mounting.
Mini Harpoon: six steels, one blade shape
The Mini Harpoon is where the family gets interesting. Every version uses the same 3-inch flat-ground drop point with the harpoon tip, the same 6.49-inch overall length and the same 0.12-inch stock. What changes is the steel and the handle.
| Model | Steel | Handle | Weight | Price |
|---|---|---|---|---|
| Mini Harpoon (1040S7) | AEB-L | Micarta | 66 g | $49.99 |
| Mini Harpoon (1040S6) | CPM-3V | G10 | 66.3 g | $65.99 |
| Harpoon Mini (1040S5) | 3V | PEI | 59.5 g | $69 |
| Mini Harpoon (1040SHW1) | 3V | PEI (yellow) | 59.7 g | $39.99 |
| Mini Harpoon (1040S8) | M390 | Carbon fiber | 67.1 g | $119.95 |
| Mini Harpoon (1040S9) | S45VN | Fat Carbon | 72.2 g | $134.99 |
The AEB-L version is the entry point and, for a lot of people, the sensible one. At 58-60 HRC this steel is known for being tough and easy to sharpen, which suits a small fixed blade that will see camp chores and food prep. The Halloween edition (1040SHW1) is the outlier at $39.99, an unusual price for a 3V blade, and it is billed as a limited run.
The 3V versions push in the toughness direction, which matters on a knife this small: a three-inch blade gets used for prying-adjacent jobs more often than anyone admits, and CPM-3V has a reputation for taking that abuse. Step up to the KizerB-tier models and the steel ladder becomes about edge retention: M390 and S45VN at the top of the range hold an edge noticeably longer than AEB-L. The reasons come down to carbide volume and hardness, which the Knife Steel Nerds work on edge retention explains in depth.
- Kizer Mini Harpoon AEB-L Micarta (1040S7)
- Kizer Mini Harpoon CPM-3V G10 (1040S6)
- Kizer Mini Harpoon M390 Carbon Fiber (1040S8)
Handle material matters more than usual here because each option changes the character of the knife. PEI is the see-through polymer Kizer uses to show off the internal liner structure, and it keeps the knife under 60 grams. G10 and Micarta are the traditional workhorse options. Fat Carbon on the S45VN model is the dressy end of the range.
Harpoon Fold: the family goes folding
The Harpoon Fold is the newest member and the one that changes the family's reach. It takes the Harpoon silhouette and moves it to a 3.4-inch blade in a folding frame lock format, sized deliberately between the full-size Harpoon and the Mini.
Every Harpoon Fold shares the same platform:
- Blade length: 3.40 in
- Blade thickness: 0.12 in
- Lock: frame lock
- Opening: thumb stud and front flipper
- Blade shape: drop point with harpoon tip and thumb ramp
From there the variants split by steel and finish:
- KizerB 4784A1 — Elmax, stonewashed, titanium handle, 114.3 g, $159.97
- KizerB 4784A2 — Elmax, satin, titanium and Norplex UltreX Micarta, 91.5 g, $129.97
- KizerB 4784A3 — Elmax, matte DLC Ultra coating, titanium handle, 112.9 g, $169.97
- KizerB 4784A4 — three-layer composite steel, flat grind, titanium and Micarta, 96.3 g, $109.97
Elmax is the headline material. It is a powder-metallurgy stainless, which is a class of steel made by atomizing molten alloy into powder and consolidating it, producing a very even distribution of carbides compared with conventional ingot steel. The Wikipedia entry on powder metallurgy covers the process, and it is the reason Elmax can combine good wear resistance with decent toughness.
The double-opener setup is worth calling out for anyone deciding between the Fold and the fixed blades. A thumb stud gives you the conventional opening, while the front flipper gives you a second, more discreet option. Our front flipper vs top flipper guide covers how those two motions differ in practice, and the best frame lock EDC knives roundup puts the Fold's lock style in context.
Fixed or folding: which Harpoon is right for you?
The choice is less about steel and more about what a fixed blade asks of you.
A fixed blade is stronger by construction — there is no lock, no pivot and no detent to worry about — and it deploys instantly from a sheath. In exchange, you carry a sheath, and your carry options are limited by how the sheath mounts. The full-size Harpoon's Kydex sheath with two button snaps is set up for belts, packs and straps, but it is still a sheath.
A folding knife changes the whole carry proposition. The Harpoon Fold sits in a pocket, clips to a waistband and disappears into a bag. It gives up the fixed blade's absolute simplicity and gains the ability to be carried anywhere you would carry a folder.
For a dedicated camping or hiking knife, the fixed Mini Harpoon or full-size Harpoon is the more honest tool. For a knife that lives in a pocket every day and occasionally does camp work, the Fold makes more sense. If you want a fixed blade specifically, our budget EDC fixed blade roundup covers the alternatives, and the Kizer Polaris review looks at the other end of Kizer's fixed-blade range.
Sheath, carry and care
The fixed Harpoons ship with Kydex sheaths. Kydex is a thermoformed thermoplastic that holds a knife by friction and a shaped fit, which is what gives the sheath its positive retention and lets you mount it vertically, horizontally or at an angle. Wikipedia's Kydex overview explains the material if you are new to it.
Care is straightforward across the family. D2 is a carbon steel with limited corrosion resistance, so the powder-coated Harpoon should be dried and oiled after wet use — the same discipline anyone carrying a coated carbon blade already follows. The stainless options (AEB-L, 3V, M390, S45VN, Elmax) tolerate moisture far better. Micarta scales handle moisture well and wipe clean; Micarta is a composite of fabric or paper bonded with resin, which is why it develops a patina rather than wearing out.
On sharpening, all versions are flat ground and respond well to a guided system or a simple stone progression. The harpoon tip means you will want to keep the tip section off the stone until last so you do not round it off.
Who is this family for?
The full-size Harpoon is for someone who wants one small fixed blade for camp, yard work and general utility, and wants to spend under $100 doing it.
The Mini Harpoon line is for anyone who wants the same knife in a pocketable-ish fixed format and cares about steel: the AEB-L version for a tough, easy-to-sharpen working blade, the M390 and S45VN versions for edge retention and a more premium build.
The Harpoon Fold is for the person who liked the Harpoon shape but would never carry a sheath. It is the most expensive way into the family, and also the only version that will actually ride in a pocket.
Frequently asked questions
Is the Kizer Harpoon a fixed blade or a folding knife?
Both exist. The full-size Harpoon and the Mini Harpoon are fixed blades with Kydex sheaths. The Harpoon Fold is a folding frame lock knife with a 3.4-inch blade, thumb stud and front flipper.
Who designed the Kizer Harpoon?
The Harpoon is a collaboration between Kizer and James Buckley of Maverick Customs, the Kentucky-based shop featured in the product descriptions across the family.
What's the difference between the Mini Harpoon versions?
They share the same 3-inch blade, handle length and weight class; the differences are steel and handle material. The range runs from AEB-L with Micarta at $49.99 to S45VN with Fat Carbon at $134.99, with 3V, M390 and a limited Halloween edition in between.
What steel does the Harpoon Fold use?
Most Harpoon Fold variants use Elmax, a powder-metallurgy stainless, in stonewashed, satin and matte DLC Ultra finishes. One slower-moving variant uses a three-layer composite steel with a flat grind.
Can I carry the Harpoon Fold in a pocket?
Yes. It is a frame lock folder with a blade just over three inches, so it carries like any other pocket knife. The fixed versions require a sheath, and blade length rules for fixed blades are usually stricter than for folders in the same area.
Bottom line
The Kizer Harpoon family is a rare case of a fixed-blade design earning a folding sibling without losing what made it good. If you want the tool, buy the fixed blade: the $59 D2 Harpoon if you want simple, the AEB-L Mini Harpoon if you want easy sharpening, or the M390 and S45VN versions if edge retention is your priority.
If you want the shape in a knife you will actually have with you, the Harpoon Fold is the answer, and the titanium and Micarta version at $129.97 is the best-value way into Elmax. Either way, you are buying the same Maverick Customs silhouette — just in the format that fits your carry.