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The FB35 ARK is a compact neck knife designed for personal defense.

Appearance in catalogs

The FB35 ARK appeared in the following catalogs:


John Shirley and Sam Owens

History, mentionings etc. from the forums

Information from the Spyderco catalog on the web


The ARK—or “Always Ready Knife™—is a purpose-designed personal-defense knife conceived by U.S. Army combat veteran John Shirley and his friend Sam Owens. While deployed to Afghanistan, Shirley learned that an alarming number of U.S. personnel were falling victim to sexual assault, particularly while showering. Drawing from his knowledge of the Japanese martial arts and with the help of Owens’ skills as a craftsman, they developed the ARK as a lightweight self-defense tool that can literally be carried anywhere.

The heart of the ARK is its deeply curved clip-point blade ground from H-1® steel—a nitrogen-based alloy that is extremely corrosion resistant. The curved edge packs impressive cutting power into the compact blade and the clip-point profile ensures a strong, extremely sharp point. The ARK’s fiberglass-reinforced-nylon (FRN) handle is molded directly onto the tang and features Spyderco’s proven Bi-Directional Texturing™ pattern and an index-finger groove to guarantee a secure grip—even with wet hands.

To ensure universal carry, the ARK includes an injection-molded polymer neck sheath with a breakaway ball chain. Best of all, the ARK and its sheath together weigh only 2.0 ounces (57 grams), so you’ll hardly know it’s there—until you need it.[1]


The FB35 is made in Japan and features:

  • an upswept Clip Point Blade
  • an H-1 blade and overall 'rust-proof' construction
  • an injection molded polymer sheath that can be fitted to a G-Clip (sold seperately)
SKU Handle Edge Steel From/To MSRP Note Number made Grind Sheath Clip Collectors club
FB35PBK Black FRN PE H-1 2015 - $105.00 (2020) Hollow grind Injection-molded polymer Ballchain for neck carry
FB35SBK Black FRN SE H-1 2015 - Nov. 2020 $105.00 (2020) Hollow grind Injection-molded polymer Ballchain for neck carry

Most collectible variation

The original FB35 ARK, complete with original box and papers in mint condition, is likely to be the most collectible version.

Questions regarding collecting the FB35

Some interesting questions we are looking for an answer to:

Questions with an answer:

Technical information

Measurements (mm and grams) of the FB35 ARK:

Variation Length overall Length blade Length edge Blade thickness Weight
FB35BK 126mm 65mm 53mm 2.0mm 26g

Measurements (inches and ounces) of the FB34 Reverse:

Variation Length overall Length blade Length edge Blade thickness Weight
FB35BK 4.98" 2.56" 2.10" 0.080" 0.9oz


  1. The FB35 ARK in Spyderco's online catalog


The FB35 ARK, shown with a SpyderEdge