Buck 840 Sprint Select Flipper Knife 3.125" 420HC Stonewashed Drop Point Blade, Blue GRN Handles - 12866


MSRP* : $60.00 | You Save* : $10.01 (17%)
Part #: BU0840BLS | Buck Knives


BU0840BLS: 840 Sprint Select Flipper, Blue GRN Handle

Buck Knives

Utilizing ball bearing technology, the Buck Sprint Select is designed for smooth and efficient opening with a reduction in friction for rapid blade deployment. A sturdy liner lock secures the blade while in use while the sturdy GRN handles give a secure grip. Available in multiple colors, each Select model utilizes 420HC steel. This knife features a convenient deep carry pocket clip for easy carry.

Drop Point

This blade is full bellied with a strong, thick point for heavier tasks. It can also be used as a general work knife. The top of the blade drops down toward the tip, which minimizes accidental puncturing while skinning. The drop point blade is strong and very versatile.

One-Handed Opening

Has a thumb stud, blade hole or other feature to facilitate one-hand use. Some models are one-hand opening and one-hand closing as well.

The steel behind the blades

Buck is a market leader in edge retention thanks to their steel selections and heat treat process pioneered by Paul Bos, whose heat-treating system has proven to the best in the business. Each blade is put through a rigorous heat treat process and quality performance test then is tempered to the appropriate Rockwell Hardness through a heating, freezing and reheating system. This process, along with attention to detail through grinding and hand edging, is the foundation of Buck’s Edge2X technology. This gives you longer edge life, ease of resharpening and a blade that will not fail you.


420HC is Buck’s standard steel with great edge retention and corrosion resistance. This industry standard is easily resharpened. For best performance, Buck hardens to a standard Rc 58-60.


People who carry a knife every day do so for one very important reason – because they use it every day. The knives they carry must be as reliable as they are functional, designed to perform effortlessly in whatever lifestyle they are part of.

Select Level

Buck’s Select Level offers reliable products at an unsurpassed value. Quality materials and innovative Buck designs create practical knives and tools that deliver affordable excellence.

  • Drop point, 420HC steel blade
  • Smooth and rapid one-hand opening with ball bearing technology
  • Liner Lock for safe use
  • Sturdy GRN handle available in various colors
  • Advanced Edge2x blade technology
  • Forever Warranty


  • Product Level: Select Level
  • Blade Length: 3.125" (7.9 cm)
  • Closed Length: 4.375" (11.1 cm)
  • Overall Length: 7.50" (19.1 cm)
  • Blade Style: Drop Point
  • Blade Finish: Stonewash
  • Blade Steel: 420HC Stainless Steel
  • Steel Hardness: 58-60 HRC
  • Blade Thickness: 0.12"
  • Handle Material: Blue Glass Filled Nylon
  • Locking Mechanism: Liner Lock
  • Pocket Clip: Deep Carry (Tip-Up, Right Carry)
  • Weight: 3.2 oz.
  • Made in the USA

UPC Code: 033753157950

Related Categories

Buck Knives, Buck Sprint Series, 420HC Blade Steel, Synthetic Handle Material, Folding Knives, Folding Knives Liner Locks, Made in USA

Zytel Handles
Pocket Clip
Made in USA
Buck 840 Sprint Select Flipper Knife 3.125" 420HC Stonewashed Drop Point Blade, Blue GRN Handlesrated 2.000 stars out of 5 (1 review)
2.0 out of 5 stars
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Buck 840 Sprint Select Flipper Knife 3.125" 420HC Stonewashed Drop Point Blade, Blue GRN Handles
rated 2 stars out of 5
May 16, 2020
Pros: Blade Sharpness, None
Cons: Handle Material, Overall Quality, Lock Ease of Use, Ease of Opening
Defective open assist
This knife would be used for EDC use, but with this being the poorest quality buck knife I've ever bought, the open assist can't be counted on to open much more than 50 % of the time. Not a knife that can be counted on to open and lock. The handle appears black and not blue. My previous Buck knifes are of much higher quality. Would Not recommend.


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