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Gerber Fullback - Assisted Opening Knife
Gerber Fullback - Assisted Opening Knife


Assisted Opening Knife

Item: # 31-003011

A workhorse to tackle any job, this knife features a sturdy 3.25 mm thick Wharncliffe blade partnered with a hefty, durable handle for comfort in hand. Quick deployment comes from the FAST 2.0 mechanism, anchored by both a plunge lock and a cross bolt safety feature when in use.


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    • Blade steel: 7Cr17MoV
    • Handle material: Glass-filled nylon
    • Blade length: 2.8” (7.0 cm)
    • Closed length: 4.2” (10.6 cm)
    • Overall length: 7.0” (17.7 cm)
    • Overall weight: 3.4 oz (96 g)
    • Lock Style: Liner Lock
    • Titanium nitride blade coating
    • FAST 2.0 assisted opening mechanism
    • 3.25 mm thick Wharncliffe blade
  • Warranty

Since the time of the caveman, mankind has proven to be driven forward by the desire to discover and innovate. Never satisfied to stand idly by, we take pride in finding solutions for our daily lives. In the pioneering spirit of those ancestors, Gerber has built the Fullback assisted opening knife. The newest reincarnation of your everyday companion, this knife addresses the age old necessity of needing an instrument that does it all. A workhorse that can tackle any job head on, the Fullback AO is a dutiful collaboration of toughness and function – your answer to life’s daily questions. 


Life can be a real beast sometimes. When you are in the thick of it, wondering if your blade can cut it is a luxury you can’t afford. Enter the Fullback AO - a fine edge folding knife with nerves of steel that rises to any challenge fearlessly.  Featuring a 3.25 mm thick Wharncliffe blade, this resilient knife is tough yet has the finesse for fine cuts. When daily tasks require super-human strength, the 7Cr17MoV steel ensures control and durability for today and the years to come.


When time is of the essence Gerber’s F.A.S.T. 2.0 assisted opening mechanism is dependably accurate, allowing true one-handed blade engagement. Dual thumb studs guarantee that your knife is available to you when you need it most and a secondary plunge locking system ensures that it stays closed when you don’t.  The cross bolt safety feature keeps the blade from opening or closing inadvertently, affording unparalleled peace of mind. Handle scales provide a sure-handed grip, lending to a safety focused design that gives you the confidence to trust in your knife.


Engineered with the wear and tear of everyday use in mind, the Fullback AO is an indispensable addition to any knife enthusiast’s arsenal. Born in the place where grit and function collide, this knife has it all. The beefy glass-filled nylon handle feels solid in your hand, providing sturdy application and comfortable ease of use. Whether on your person or close at hand, the hard-wearing pocket clip and lanyard hole provide multiple carrying options when needed. A durable titanium nitride coated blade keeps your knife in working form for generations to come, ensuring that you will quit long before your knife does.

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Overall Rating

  • 3
  • |3 out of 5 stars
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  • 1 5
  • |DEC 3, 2018
  • |BY: , Old sailor

The assist opening does not work. The action is so stiff that it is impossible to open with one hand. trying with two hand results in the blade snapping unexpectedly, but then never fully opening to lock due to friction. All of the actions: buttons, locks, and blade movement are stiff and unpredictable making what could have been a joy a dangerous process even with two hands. There is apparently no opening test done prior to the knife leaving the factory. The worst Gerber product I've purchased.

  • 3 5
  • |MAR 14, 2017
  • |BY: , Certified Quality Engineer

Excellent Overall design with the incredible Wharncliffe blade. Wharncliffe is extremely suited for heavy tasks and easy sharpening. Gerber did a great job with the overall design. Unfortunately, the clever jewel was made in China. Whether you are a patriot or a tightwad, this knife will demonstrate why a simple knife should be made in USA where the quality is high and the price is nearly the same. This model illustrates what happens when you have great engineering, then ship the manufacturing overseas. Make it here, with our domestic quality, and earn a 5-star rating with no other changes. I want to love this knife. Make it so. If not, soon you'll be taxed so there is no benefit for you to do what you did.

  • 5 5
  • |FEB 26, 2017
  • |BY: , Sharp

An excellent EDC. No issues with opening or play in the blade. Came sharp honed to a razor with little effort. The cross bolt safety is a great feature for my needs.

  • 5 5
  • |JAN 25, 2017
  • |BY: , Fullback review

A great edc folder. I've heard of some issuses people have had with opening, and I'm sure it's a defect that gerber will cover. My knife came sharp, easy to open and snappy. Great value

  • 2 5
  • |AUG 21, 2016
  • |BY: , Owner

Really wanted this to be my new EDC as the screws on the clip of my mini covert stripped out. However when receiving the knife I instantly noticed how hard it was to open. Hard to open with two hands even, impossible with one. I thought it needed a break in period or something, however i noticed some other users elsewhere reporting the same issue. One user said he had to grind down a part for it to open properly. I shouldn't have to do this for the product to work properly. Other users are saying theirs opens just fine so this is obviously a quality control issue.

  • 4 5
  • |OCT 26, 2015
  • |BY: , Fullback review

I really like the knife, it was a little hard to open at first , the thumb studs hurt my fingers after awhile but after I got used to how to open it properly, now it opens every time painlessly, great knife.

  • 4 5
  • |OCT 22, 2015
  • |BY: , Your Title

Knife is snappy. Opens well. Blade isn't quite centered towards the tip when closed. Very, very slight amount of blade play (less than 1/1000th/in) when open. Safety feels solid. Came fairly sharp out of the package.