Buck 591 Paradigm Shift Automatic Folding Knife Black G10 3" S35VN Satin

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12/31/25 01:00AM
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  • Overall: 7.375"
  • Blade: 3.0" S35VN, Satin, Spear Point
  • Handle: 4.375" Black G10
  • Frame/Liner: Stainless Steel
  • Weight: 4.8oz
  • Clip: Tip-Up; Right Hand
  • Knife Type: Automatic, Bolster Thumb Slide
  • Lock Type: Bolster Lock
  • Made in the USA
  • Model: 0591BKS

The Paradigm Shift from Buck Knives is an Automatic knife that deploys instantly when the Shift Mechanism Bolster Lock is deactivated.
Slide the bolster up and your knife is open. It closes the same way and with the bolster lock, it prevents an accidental deployment in your pocket. 

3 Reviews Hide Reviews Show Reviews

  • 2

    Posted by Henry Egigian on Sep 14th 2022

    It’s a nice enough knife, but the clip is so tight, it won’t go into any pocket. I communicated this to Buck and they offered to send me a clip for $5.00. I guess they expect me to pay for their short coming. No way. Buck can pound sand and sell their knives to someone else. I love doing business with Clay and Coco and look forward to getting more knives from eknives, but you can bet the house that none of those knives will say Buck on them.

  • 1
    Customer service???

    Posted by Hank Egigian on Sep 7th 2022

    The knife arrived with a clip that was so tight that it would not go into my pocket. I contacted Buck and they said that they would send me a clip for $5.00. I was very courteous, but in essence, I told them to pound sand. I’ll never buy another Buck product. On the other hand, I love doing business with Clay & Coco and look forward to more business with knives. Shame on Buck.

  • 5
    This is a great knife! The build, and materials...

    Posted by Ben Blunk on Aug 16th 2022

    This is a great knife! The build, and materials are awesome. It arrived in a couple of days, and exceed my expectations!