CRKT M40 - 15 w/ Veff Serrations Folding Knife

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Discovered in a private collection and brought to life.

The late Kit Carson’s memory is felt strongly throughout the industry—it shows in the absolute reverence the knife world has for his M16 and M21 designs. The M40 everyday carry folding knife is based on a legacy design. This version is reimagined with Deadbolt, marrying classic design with contemporary innovation. Kit’s legacy just keeps growing.

  • Strong And Simple: Deadbolt lock provides incredible strength and it's easy to use
  • Smooth Opening: IKBS ball bearing pivot deploys the blade smooth
  • Extremely Sharp: Veff Serrations provide superior cutting power of rope and straps
  • Strong And Lightweight: Glass reinforced nylon handle is durable and lightweight


  • Blade Length: 4.00" (101.57 mm)
  • Blade Edge: Veff Serrations
  • Blade Steel: 1.4116
  • Blade Finish: Bead Blast
  • Blade Thickness: 0.16" (4.14 mm)
  • Overall Length: 9.38" (238.13 mm)
  • Closed Length: 5.34" (135.69 mm)
  • Weight: 6.20 oz. (175.77 g)
  • Handle: Glass-Reinforced Nylon w/Aluminum Bolster
  • Style: Folding Knife w/Deadbolt Lock

Kit Carson turned out a host of game changing knives from his bench in Vine Grove, Kentucky. The M40 is based on one of his relatively unknown custom designs. In classic Kit style, the 4” stainless steel spear point blade is all business. It’s been given Veff Serrations for powerful cord and rope cutting capability and is met with a glass-reinforced nylon and aluminum bolster handle that’s strong and surprisingly lightweight. The magic happens when you fire it up. The deployment action is quick and smooth with a flipper and IKBS ball bearing pivot system. It locks into place with Deadbolt and will stay there—enduring incredible stress and weight—until it’s simply closed with the prominent button.

The M40 is well deserving of a spot in this legendary lineage.

How Deadbolt Works

Steel bolts interlock with the blade when it’s deployed to yield incredible strength. A prominent button sits at the pivot point for simple, intuitive disengagement without fingers crossing the path of the blade.