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Columbia River 2380 Ritter RSK Mk5 Neck Knife 1.75" Plain Blade for Survival Kit

Customer Reviews 4.217 Read 23 reviewsWrite a Review
Part Number: CR2380
Manufacturer: Columbia River (CRKT)
Retail Price: $29.99
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CR2380: RSK Mk5™
Columbia River

Sometimes simple is better. Here is a skeletonized fixed blade designed as a personal carry for emergency and survival use.

Doug Ritter's RSK Mk5™ (Ritter Survival Knife) is not a knife you would use all day for normal work tasks. But, based on Doug's philosophy that "if it isn't with you, it can't save you™," it is compact and light enough to fit in almost any small personal survival kit or stash-away location, yet robust enough that it's a knife you can bet your life on™.

Doug is the founder of the Equipped To Survive™ and an international authority on survival equipment. The RSK Mk5 is a collaborative effort based on Georgia knifemaker David White's custom Shrewd Survival Knife, itself the result of collaboration with Dr. Andrew Osbourne.

Weighing in at less than an ounce, the skeletonized fixed blade sports a 1.75" wide-chord drop-point blade with a high flat grind. The high-carbon steel blade has Doug's preferred stonewashed finish for improved corrosion resistance.

The ergonomic curved handle provides a secure and comfortable two-finger grip while a brightly colored nylon cord fob adds additional length and grip.

Use it to make fuzz sticks, construct shelter, gut a fish, dress game or for self-defense. Whether it is wilderness or urban survival, the Mk5 will do its part to keep you alive and kicking.

Includes a custom-fitted Kydex® sheath and a mint-size carrying tin along with Doug's suggestions for building up your own personal survival kit.

  • Knife:
    • Blade: Length: 1.75" (44 mm)
    • Thickness: 0.12" (3.0 mm)
    • Steel: 3Cr13, 52-55 HRC
    • Knife: Overall length: 3.81" (97 mm)
    • Weight: 0.9 oz. (26 g)
  • Sheath:
    • Material: Kydex
    • Length: 2.25" (57 mm)
    • Width: 1.47" (37 mm)
    • Weight: 0.3 oz. (9 g)
  • Made in China
About Doug Ritter
Doug Ritter
is an internationally acknowledged authority on survival equipment. He founded and publishes the renowned Equipped To Survive and is Chairman of the non-profit Equipped To Survive Foundation. Doug doesn't claim to be a knifemaker, but he is not shy about promoting the practical design features that he prefers to see in a functional survival tool. In the past few years that has evolved into successful limited production collaborations with a number of makers incorporating his functional knife design philosophy and an eye for simple, practical and beautiful blade design. Doug's aim is to maximize functionality and minimize all else, "everything you need, nothing you don't™," as he puts it. The compact RSK Mk5 is his first CRKT collaboration and the first to be distributed widely through normal knife sales channels. Columbia River Knife & Tool is extremely happy to have an expert on personal and outdoor survival on board, and we hope to find other outlets for Doug's specialized expertise.
Kydex Sheath
Kydex Sheath
Waterproof, scratch resistant, and low friction. It will hold its shape and makes a great alternative to leather.
Steel Handles
Steel Handles
Stainless Steel knife handles provide strength and durability while using chromium oxide to create a rust-resistant barrier.
4.217 (23 reviews)
4.2 out of 5 stars
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4 out of 5
South Dakota
Feb 28, 2013
Pros: Weight, Blade Material, Sheath/Scabbard
Cons: None
Have it with me every day
I bought it for the size and it was one piece or steel. I don't have to worry about the blade coming out of the handle. It's not terribly easy to manipulate, although I haven't used it for much, but that's the trade off for the size. The lanyard makes a big difference; I had gotten another small knife with a lanyard and at first thought it was just decoration. It's amazing how just something hanging off the bottom can make a difference with these small handles. It rides on a bead-chain very easily, there if you need it, doesn't weigh you down if you don't.
5 out of 5
Don M
Ventura, CA
Dec 20, 2012
Pros: Overall Quality, Blade Sharpness, Weight, Materials
Cons: None
Good Small Knife
For an extremely small, compact and light product, this is a highly useful product. It is not intended for everyday use, but will be a component of one of my "just in case" kits. There are other very small knives, but very few with this quality steel; this one was delivered razor sharp. I did spend some time adjusting the knot on the lanyard so that it fit my hand properly; this makes a big difference in its utility. What would be useful would be a small set of hollowed out scales so that a user would have the option of including a fire steel or something similar. As the knife stands right out of the box (provided you adjust the lanyad) it is just fine.
4 out of 5
Paul T
Nov 04, 2012
Pros: Blade Material, Materials, Handle Material, Weight, Overall Quality, Finish
Cons: None
Great backup or for a survival kit, its better suited to smaller or more precise tasks. The sheath is not secure enough to wear on your neck without constantly making sure its still there. I put mine in the pouch on the sheath of my ontario ranger afghan bush 5" and they are an excellent combo for camping and survival.
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