Tac-Force TF-640 Pewter Gunmetal / Silver & Black Two Tone Spring Assisted Tanto Blade EDC Knife 3.5"


SKU: TF-640

Tac-Force Tactical 440 Stainless Steel Two Tone Black & Silver Spring Assisted Tactical Pocket Knife

The spring assisted knife is quite a remarkable blade. Developed because of laws and municipalities that bar or prevent one from legally owning and/or carrying automatic switchblade knives, it is the perfect solution!

This spring assisted knife, in contrast to a standard automatic switchblade knife, is not opened by pressing an activating button (the button is what gets an automatic knife classified as illegal) , it is opened by using the index-open "flipper", which creates a hand guard when it is open.

The beauty of this spring assisted feat of engineering lies in its pivot area where a wound-up internal spring has been nested that assists in the opening of the knife. It is this spring that differentiates this spring assisted knife from its automatic switchblade / OTF cousins as well as the standard folding, manually-opened, lock blade knife.

To summarize the internal spring featured in this knife assists and finishes the opening process once the index flipper is pushed. That's right!!! Once the blade has reached a 30-40 degree angle, it automatically slams open the rest of the way !!!

Springing open to 7.75" ( 3.5 inch Blade ) ,and weighing only .26 lb due to its weight saving Aluminum Scales means this Spring Assisted Knife exhibits all of the Function for a perfect everyday carry.  The Aluminum Anodized Pewter (Gray) / Black Scales and Two Tone Silver / Matte Black 440 Stainless Steel Tanto Style Blade make it highly resistant to the elements while offering enhanced grip as well as an aggressive look.

The handle of this spring assisted knife, which features a durable 440 Stainless Steel Frame and Aluminum Scales is complete with weight saving cutouts further accentuate its purpose as a lightweight EDC ( everyday carry ) knife. The 3.5" single-edged Tanto style blade is also made of 440 Stainless Steel providing the longevity and durability found in some of the most expensive cutlery! Add to all this, a handy / removable pocket clip / Integrated Seat Belt Cutter / Integrated Glass Breaker and a Lanyard Hole and you have a knife perfect that is conveniently suited to most tasks including that of First Responders!

As a legal alternative to a push button automatic knife, an impressive unique knife for your collection, or an incredibly useful tool, perfect for daily use, this Stiletto Spring Assisted Knife fits the bill!


  • Overall Length: 7.75"
  • Blade Length: 3.25"
  • Cutting Edge: 3"
  • Blade Width: 1"
  • Blade Thickness:  3mm
  • Blade Material: 440 Stainless Steel
  • Handle Length: 4.5"
  • Handle Width 1"
  • Handle Thickness: 1/2"
  • Handle Material: 3CR13 Stainless Steel Frame with Aluminum Scales
  • Blade Style: Tanto
  • Blade Edge: Plain
  • Blade Lock Type: Liner Lock
  • Options: Spring Assisted / Index-open "Flipper" / Pocket Clip / Thumbstud / Jimping / Integrated Seat Belt Cutter / Integrated Glass Breaker
  • Weight .26 lb (4.1 oz)