4.5 star rating 4 Reviews
$221.00 $260.00
**Restricted to USA and APO/FPO sales** 


Based on the 9050 AFO, the 9051 advances a proven tool used in all branches of the Armed Forces. Here are the improvements over the 9050 AFO:   its push button lock mechanism is 30% stronger and opens faster, increasing spring power and force, as well as safety; a newly enhanced ergonomic Handle provides more grip; an open back-spacer allows for easy maintenance, making it easier to clean and prevent the collection of oil or mud; an increased finger guard and a larger button allow for ease of deployment with a gloved hand; and a newly added glass breaker, made of hardened steel, is on the end of the Handle.

The Army Evaluation Task Force performed tests on the 9051 AFO II, including impact tests and salt water tests. "This knife exceeded our expectations, and performed better than all other knives we evaluated" said SFC Kevin Reagan, BDE Small Arms Master Gunner. The 9051 was the only auto-opening knife that passed the salt-water test.

New and Improved Push Button Lock is more than 30% Stronger than Previous Version

  • Push-button automatic with integrated safety
  • Features a drop-point blade
  • 154CM Stainless Steel blade (58-61HRC)
  • Black anodized, machined 6061 T-6 aluminum Handle with open backspacer and reversible steel pocket clip


  • Blade Length: 3.56"
  • Blade Thickness: 0.125"
  • Handle Thickness: 0.600"
  • Blade Material: 154CM Stainless Steel (see below)
  • Blade Hardness: 58-60HRC
  • Blade Style: Utility
  • Weight: 5.80oz. Clip: Tip Up, Reversible, Black
  • Lock Mechanism: Push Button Automatic (see below)
  • Overall Length: 8.51"
  • Closed Length: 4.95"
  • Sheath Material: Ballistic Nylon w/ Slice Clip
  • Class: Black (see below)


Benchmade Design - Made in the USA

154CM Stainless Steel - An American made premium grade stainless steel originally developed for tough industrial applications. Known for its best all-around qualities, it offers great corrosion resistance with good toughness and edge quality.

Class - Black Class products are designed, developed and tested for extreme duty. They are the preferred cutting tools for Law Enforcement, Public Safety and Elite Military Troops around the globe.

Note -  these types of knives are restricted to Active Duty Military and Law Enforcement, and federally regulated. Be certain of permissibility in your location including state or local governments and within your reporting bodies.

Lock Mechanism - These are folding knives, which open at the push of a button. An especially important feature to have if your disability, occupation or profession has the potential of limiting your mobility or freedom to access a knife through traditional means. The blade is deployed out from the Handle side like traditional folding knives, but the blade is spring open assisted to a fully locked position.

Benchmade is recognized for making some of the finest auto opening knives in the world. These are primarily manufactured for Law Enforcement, Military and Government Agency distribution. The Benchmade autos take full advantage of a powerful coil spring blade actuator coupled with a precisely machined taper lock mechanism, proving itself to be the most reliable system available in auto open knives. And Benchmade's patented integrated safety mechanism (located on Handle spine) ensures that the blade will not inadvertently deploy or close once it is locked open. Benchmade autos are precision engineered and manufactured to perform in the real world - you would be hard pressed to find a superior tool.

Benchmade AFO II 9051 Automatic Knife
$221.00 $260.00