Benchmade Infidel D/E Dagger OTF Automatic Knife (3.91" Black) 3300BK


  • Double edged black finished dagger blade made from D2.
  • Automatic opening and closing with a jimped thumb slide.
  • BK1 black anodized T6 aluminum handle that fits powerfully in hand.
  • Tip-down right handed carry aluminum pocket clip.


Rumors circulated for years about a possible Benchmade OTF knife. Good news Benchmade lovers- the knife has finally arrived. The Benchmade Infidel 3300 OTF is, to put it mildly, awesome. It is outstanding in terms of quality, action, and lock-up. D2 tool steel double edged blade, double ground. Add this knife to your collection and use it as an EDC. You won't want to miss the action of this snappy automatic knife which shoots out and comes back in quickly. It is addicting to open and close. You won't want to put it down.

Blade HQ's Benchmade Infidel Review: ahhh yeah! A few features we really like is the sliding button on the face of the handle, instead of on the side as many others have. The milled "stepped" handle design assures that this knife will not be slipping out of your hand.

View our other Benchmade Infidel Knives in stock!

Benchmade Authorized Premium+ Dealer
Item #BHQ-2951
Our Price: $495.00
Out of Stock
Try Benchmade (OTF) instead
Login to add items to your Wishlist


  • Overall Length: 8.91"
  • Blade Length: 3.91"
  • Blade Thickness: 0.10"
  • Blade Material: D2
  • Blade Style: Spear Point
  • Blade Grind: Flat
  • Finish: Black
  • Edge Type: Plain
  • Handle Length: 5.00"
  • Handle Thickness: 0.57"
  • Handle Material: Aluminum
  • Color: Black
  • Weight: 4.53 oz.
  • User: Right Hand
  • Pocket Clip: Tip-Down
  • Sheath: Nylon
  • Knife Type: Double-Action OTF Automatic
  • Opener: Thumb Slide
  • Brand: Benchmade
  • Model: Infidel
  • Model Number: 3300BK
  • Designer: McHenry & Williams
  • Country of Origin: USA
  • Best Use: Tactical
  • Product Type: Knife

Customer Reviews

Finally perfection achieved
David K. on Dec 27, 2022

The Infidel has been fighting quality control issues since its issue. This 2022 release has finally arrived in dashing fashion. Gone are the wiggles and blade play after opening. They are so confident they are releasing spare blades to be installed by shade tree technicians. There’s even a new 3.1” release in M 390 with spare blades at $59.95 a pop. Nothings new but QC is finally over the top American made OTF that can compete with MicroTech. Don’t neglect this as a new model because it surely is. Owning this and countless Micro Techs and three older models of the Infidel I’m at last proud to own a Benchmade Infidel.

Hard for old hands
James H. on May 26, 2022

I've wanted this knife for many, many years. I finally pushed the button and bought it. I would keep it for sure but the trigger is too hard for my weak, maybe arthritic hands to deploy. Sometimes I have to use two hands to retract the blade. So sad. Coolest knife I've ever handled.

Blade HQ response:
We're very sorry to hear about the trouble you're having. Have you contacted our customer service department yet ([email protected])? We'd like to help you get this resolved. Thanks -BHQ
Jeffrey C. on Jun 29, 2021

So well made. Typical BenchMade quality. Very smooth. ZERO blade play. No wobble. I own a lot of OTF knifes. And this has got to be my number one. Next up would be my collection of Guardian Tactical OTFs. But that’s another review. By the way. This BenchMade was bought from BHQ. Buy this OTF. You won’t regret it. I hope this helps. Jef C.

Waited a long time to buy
ian s. on Sep 24, 2020

I've wanted an Infidel for years, the price was always a little prohibitive. I finally got over it and I'm glad I did. Solid knife, smooth action, razor sharp out of the box.

Travis W. on Sep 15, 2020

I have several OTF-type automatics and this one definitely takes the cake. It arrived perfectly and carefully packed in an original box and inside a holster. It was mercifully free of any blemishes or oil on the blade and handle. The action is solid, satisfying and pretty unbelievable considering the size of the blade. It's well-constructed, feels good in the hand and even has a feel of balance that I haven't had before with OTF knives. The handle is textured and definitely customized for this particular model. I particularly love the ridges under the release that allow for a better grip. I have nothing negative to say about this knife. It's amazing.

Great Knife
Louis G. on Jun 26, 2019

The knife I received arrived in a factory sealed box and was absolutely perfect. I carry one just like this one on a daily basis and I wanted to have second one in perfect condition for my collection. I prefer this knife to side-opening knives because it is easier to open under stress, it doesn't open accidentally in your pocket, and it's easier to keep clean and lubricated. I just put the end of the long red pipe of my spray can of silicone up against the cleaning port of the knife and spray.

Such a great OTF
Shannon M. on Mar 16, 2019

This knife is awesome! It’s actually pretty lightweight in the hand and so snappy! I would highly recommend it.

It’s the Final Boss knife
Anonymous on Mar 9, 2019

Let’s be honest, you’re not buying this to cut apples, unless they’re Adam’s apples. It’s the one you pack as a backup to your gun and maybe even your primary weapon when a gun isn’t allowed. It’s a weapon and it’s for peace of mind. So go big or go home. Get a dagger. I got the black coated dagger just so that if I did need to open a letter or something, at least it makes it a couple factors more discrete. The satin would practically look like Excalibur in the light. It deploys and sheaths with great ease and precision. It just reeks of quality. Razor sharp out of the box and I intend to use the Benchmade free warranty and sharpening program a couple times a year rather than trying to sharpen it myself. If you’re considering this knife you’re probably like me and have plenty of folders and other EDC knives. This is the emotional purchase. Standing on the other side of having spent $450 and having carried it around for a bit I have to say that I don’t regret it at all. What an amazing piece of engineering.

Love it
Mark s. on Jan 19, 2018

I love this knife. Best otf I have owned.

Great OTF knife
Daniel S. on Jan 5, 2018

I really like this knife. I’ve not yet got a Benchmade that disappointed me.

Great great knife all around
Randy J. on Jun 13, 2017

I have tried several different otf's in the last couple months I went through at least 3 or 4 before I found the one. And it is definitely the infidel a little costly but well worth it !!! There double edge d2 blade is sharp as a razor the action in and out is spectacular I'd recommend it to anyone looking for a great knife!! Thank u benchmade and blade hq.

Benchmade Infidel
chris j. on Mar 6, 2015

This knife is powerful.When you fire it you can feel the smoothness of it.Great knife 2 thumbs up

michael g. on Jun 15, 2019

great knife. solid action and very cool too boot my only regret is 2 days later they offered the knife for $60.00 less for a fathers day discount. if I had known I would have waited. disappointed I was not offered that option.

Great OTF
John B. on Dec 24, 2018

Fits my hands perfectly. Love the smooth deployment/action and the blade length. Deceivingly sharp even though I’m not a fan of the single bevel. Not sure why Benchmade chose this grind. I also bought an Ultratech. The Microtech has slightly less blade play than the Infidel. Both are acceptable. No complaints about the Infidel other than the cost. It’s a keeper.

Fun with limited practicality.
Michael D. on Jan 5, 2018

I love this knife. The dual action is a hoot, and it's built solid. The dagger blade has limited practicality as an EDC, but I knew that going in. I would recommend the satin version though as the black coating gets scratched very easily. The cool factor just can't be beat though.

Benchmade Infidel
christian n. on Jul 19, 2015

Bought this one and the green infidel. Both are good, but the springs can wear out which they did on both of my models. Don't deploy your knife without it fully extended! If you deploy it and the blade is free floating it wears out the springs in my opinion. That seemed to be the issue of why they'd wear out but benchmade's warranty fixes the knives so it's not the end of the world.

Roger T. on Mar 7, 2023

This is not my first OTF, I've had my eye on this knife for about 8 months now, I've read all the reviews, I was really psyched about getting it, I finally had the money, so I bought it, and when it arrived I was totally underwhelmed. I own a lot of Benchmade products and they're all awesome, well constructed, and feel comfortable in your hand, it might just be me but it seems like this missed the mark by a bit. It doesn't feel comfortable in my hand, I don't like the texture of the handle, the blade is extremely sharp, however it does have some play in it, more than what I would consider normal, dont get me wrong, it's a good knife, I just don't think it meets the $495.00 price tag.

Blade HQ response:
Blade HQ Copyright © 2023 Blade HQ. All rights reserved
Sale Banner
Give Feedback