Spring Assist - 'Out-The-Front' Viper 3rd Gen. OTF - Satin Combo



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  • Blade: 3 1/2in
  • Closed: 5 3/10in
  • Overall: 8 3/4in
  • Steel: 4034 Stainless Steel
  • Handle: Aluminum
  • Weight: 4.9 oz.

The Viper series of Out-The-Front spring assisted knives are the most streamlined OTF models yet! They offer a bayonet style, double edged blade, housed within a compact Aluminum case. The blade is forged using 4034 Stainless Steel.

To open, start the process by pushing the blade forward using the handle's side access, and the spring assisted technically will do the rest. Once the blade fully extends, it automatically locks into place.

To close, slide the blade downward using the side access, which will release the lock and move the blade back into the handle.

There is a safety switch on the handle, and a red dot will be visible when the safety is off. The handle also features a glass breaking spike and pocket clip.

Product Specifications:

  • 3 1/2 in. blade, 8 3/4 in. overall opened.
  • 4023 Stainless Steel blade.
  • Aluminum handle.

How are Spring Assist different from a Gravity Knife or Switchblade Knife?

Gravity or Switch Blade knives feature a button, level, or other type of switch that releases a spring pressure to automatically open the blade. On a Spring Assist knife, there is no separate button or switch. Instead, you apply pressure to part of the blade to begin the opening process. This is usually a small bump of metal which sticks out under the knife, making it fast and comfortable to use. Once you press on that part of the blade, it automatically opens and locks into place. Since the action of opening the knife is started by pressing the blade metal, instead of a button or switch, it is considered to bypass the laws which ban Switch Blade kniv


Customer Reviews | Average Rating: 4.83 out of 5
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Customer Reviews

Nov 15, 2014
(5 out of 5)
Great knife

Great Knife great action good edge.


kyle daniels
Jan 15, 2014
(4 out of 5)

This is an awesome knife and sharp to I must have shaved my arm hair showing is off there's a lot of things this knife has that other OTF's don't have like a safety the blade is strongly locked it feels great its a great addition.to any collection. I just love it


Derrek Karmoen
Jan 03, 2014
(5 out of 5)

This reminds me of my grandfathers switch blade. The mechanical sounds are quite the spectacle, as is the look of the blade. My first impression was this thing is heavy. This is a solid workers knife with flare.


Dave Lander
Sep 03, 2013
(5 out of 5)
Another Great Buy

I purchased a Schrade OTF Viper w/o serrated blade - excellent. This model gets ser-rated also as excellent,


Aug 09, 2013
(5 out of 5)
awesome knife

Razor sharp blade right out the box, fast action and overall a great knife, my new favorite


May 21, 2013
(5 out of 5)

This is so cool! Lovvveeee it!


1 - 6 of 6 Reviews