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



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  • Blade: 3 1/2"
  • Closed: 5 3/10"
  • Overall: 8 3/4"
  • 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: 3.75 out of 5

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Customer Reviews

Aug 03, 2015
(4 out of 5)
4 stars

great knife! if you want an otf knife, this is the one. the one thing im concerned about it that the safty might get loose over time but other that that this knife looks and feels awesome!


Jul 14, 2015
(4 out of 5)
2 handed knife

Knife is well made,but when you get it out of pocket,you need 2 hands to open safety and then push blade release. Release needs to be at front of knife some way so it can be opened while having a firm grip on knife.


Feb 05, 2015
(1 out of 5)

i was completely disappointed the second i took this out of the box. looks and feels like a kiddie toy. it works ok but not what i was hoping for.


Aug 29, 2014
(4 out of 5)
Great knife

This is overall a pretty good OTF knife. Lightning fast opening and a pretty reliable safety and a decent price.


Andrew Ebert
Jul 29, 2014
(5 out of 5)

feels good in your hand. the over all weight is pretty good. its hefty so good build quality. but not to hefty to were is a pain to carry.


jeff h
Jun 30, 2014
(1 out of 5)
poor design

This is one of the most poorly conceived knives i have ever seen. It is very awkward to open with one hand. you cant pull it from your pocket and open it without looking at it. I would rather carry a brick! If you have one of these and you are attacked simply hand it to the assailant and while he struggles to open it, you can escape. my "lightning OTF" is 10 times the knife for less!!!!!


Doug Bowlin
Jun 27, 2014
(3 out of 5)

I love this knife as it lives up to the quality of "Schrade" name, BUT,it has one flaw. The "switch" tha opens the blade is attached to the blade itself making it impossible to open with one hand unless you are holding it in your fist upside down with the opening facing down. Then you can open it with your thumb of the same hand but I tried holding it all sorts of ways and can't open it unless I use both hands as the switch slides with the blade. I love it because it is razor sharp on both edges.


May 27, 2014
(5 out of 5)
Great Knife

This a very nice, well built, and easy to operate otf knife. It has a sturdy and very sharp blade. It is an excellent value for the price.


Mike R
Jun 13, 2013
(5 out of 5)

It took me a while to finally buy one, when I got it i wished i had eirlier. Very solid knife, blade ejects fast and locks very securly with no blade wobble. it may take a bit of practice to learn how to quickly drawl it from your pocket, release the safty and eject the blade. I have large hands so it doesnt bother me. Razor sharp out of the box and the glass breaker works great. If your a collector you need one of these.


Jun 01, 2013
(5 out of 5)
Cool Blade

Great knife. I purchased the black dagger with serrated edge. Perfect for self defense because it looks like a simple utility knife, so that adds a little 'surprise factor' when you deploy it.The blade release functions flawlessly. I am very pleased with the purchase. Knife was everything as expected and more. Very sharp out of the box as well. Easy to manipulate and the safety works just like the safety on a handgun.


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