Close
Skip to main content

STATUS: ARCHIVED
! This item is Discontinued and Out of Stock

John Gray Custom Prototype Gravitron OTF Gravity Knife Copper Vein (3.75" Satin)

Out of Stock
  • Overall Length: 9.00"
  • Blade Length: 3.75"
  • Blade Material: Elmax
  • Blade Style: Wharncliffe
  • Finish: Satin
  • Edge Type: Plain
  • Handle Length: 5.125"
  • Handle Material: Aluminum
  • Color: Copper
  • Weight: 3.57oz.
  • Knife Type: Gravity
  • Brand: John Gray
  • Model: Graviton
  • Best Use: Collection, Everyday Carry
  • Product Type: Knife
1/4
  • For Size Reference
  • John Gray Custom Prototype Gravitron OTF Gravity Knife Copper Vein (3.75" Satin)
  • John Gray Custom Prototype Gravitron OTF Gravity Knife Copper Vein (3.75" Satin)
  • John Gray Custom Prototype Gravitron OTF Gravity Knife Copper Vein (3.75" Satin)
  • John Gray Custom Prototype Gravitron OTF Gravity Knife Copper Vein (3.75" Satin)

Well shucks! This item is no longer available and we don't know when it will be back.

Here are some similar items that we hope float your boat:



This Gravitron has a "Poppin Copper Vein" handle and an Elmax blade.

This John Gray custom prototype isn't unlike a lot of OTF knives out there, similar ergonomics, action, etc., but it's got a key difference. This is a gravity knife. It is opened with either gravity or centripetal force while pressing the button, and closed the same way. Because of this, it's just as fast as a lot of OTFs, but because it has no spring, it's a more reliable mechanism with fewer moving parts. Comes with a carbon fiber pocket clip.

Blade HQ Copyright © 2026 Blade HQ. All rights reserved