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SOG FDE Pentagon OTF Auto Knife, Black Dagger Blade

MSRP: $388.95
(You save $129.00 )
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The SOG FDE Pentagon OTF knife is designed to perform. With fast, one-hand opening, this Out the Front automatic features SOG's Dynamic Lock-Up system which delivers incredibly tight lock-up and dependability.

The black finished CPM-S35VN blade pairs up perfectly with the hard anodized Flat Dark Earth aluminum handle giving you a tough knife for serious situations.

OTF knives can sometimes be difficult to fire. The Pentagon's oversized button fixed that by giving you multiple interface spots so it opens fast when you need it to.

The USA made Pentagon OTF also boasts the Dynamic Lock-Up System which completely redefines open reliability and blade lock-up strength in the OTF knife category.

The handle shape makes it comfortable to hold and gives you a secure grip regardless of the conditions.

Pentagon OTF delivers reliable OTF technology for professional users who rely on high-end steel and technology

Made in the USA.


  • Blade Length: 3.79"
  • Overall Length: 9.08"
  • Closed Length: 5.28"
  • Blade Material: CPM-S35VN
  • Blade Finish: Black Titanium Nitride
  • Blade Style: Double Edge Dagger
  • Handle Length: 3.75"
  • Handle Material: 6061-T6 Aluminum
  • Handle Finish: Flat Dark Earth (FDE)
  • Weight: 6.67 oz.
  • Made in the USA



  • pentagon otf

    Posted by anon on Apr 18th 2022


    Love everything about this, with a big caveat. About every 1 in 20th times, the blade doesnt retrace. You have to hold the blade open while pressing the button.


    Posted by Dustin Rodriguez on Apr 9th 2022


    As an owner of several higher end autos,Microtech,Protech...ect,I have to say SOG is definitely stepping their game up with their newer releases.That being said this OTF is no exception...smooth deployment,solid lock up and very little to no blade play which to anyone that is familiar with OTF's knows is very uncommon with out spending a couple Grand...very impressed with this piece!

  • great knife

    Posted by JOHN H BORDLEMAY on Jan 5th 2022


    wish I had 2


    Posted by Jose on Dec 30th 2021


    OUTSTANDING OF A KNIFE. OVERBUILT! You can feel the quality in your hand. And blade play ? NONE!! It’s insane!