Mantis MK-4 Vuja De Balisong Karambit Crossover 2" Blade, Black G10 Handles


MSRP* : $89.99 | You Save* : $10.04 (11%)


MNTMK4: MK-4 Vuja De

Mantis Knives

Mantis Vuja De Karambit Balisong. 4 3/4" closed. 2" M-VX stainless hawkbill blade with dual thumb studs. Black G-10 handles with machined hole cutouts. Finger ring. Reversible stainless pocket clip. Handles lock open and closed using spring loaded latch and push button lock.


  • Overall Length: 7"
  • Blade Length: 2"
  • Blade Material: M-VX
  • Blade Style: Hawkbill
  • Handle Material: G-10 with Stainless liners
  • Lock Style: Push Button
  • Carry System: Pocket Clip
  • Weight: 3.7 oz
  • Special Features: The world's first known production Bali-Song/Karambit cross-over
  • Made in Taiwan

UPC Code: 7999756916266

Pocket Clip
Pocket Clip Includes a pocket clip for easy accessibility and a more secure carry.
G10 Handles
G10 Handles Formed in a sheet under high pressure by combining fiberglass and an epoxy resin binder. These handles are lightweight and shaped to ensure a solid grip.
Mantis MK-4 Vuja De Balisong Karambit Crossover 2" Blade, Black G10 Handlesrated 4.154 stars out of 5 (26 reviews)
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Mantis MK-4 Vuja De Balisong Karambit Crossover 2" Blade, Black G10 Handles
rated 5 stars out of 5
Jun 28, 2020
Pros: Overall Quality, Blade Sharpness, Blade Material, Ease of Opening, Lock Ease of Use, Handle Material, Lock Type
Cons: Handle Feel, Pocket Clip, Weight, Lock Ease of Use, None
A Gem - Something different you might fall in love with
First off, this is probably one of the coolest knives you could own. The short of it is that it's something that is very unique and is best described as a gem. It might not be for everyone, but if you do like it you'll probably fall in love with it. There are a few pros and cons that just come down to personal preference, in my own opinion. Only had it a week, but overall it's a great knife and still very functional. For a more durable-life-tested review, I'd probably look to one of the people who've rebought this.P.S. - sorry for the book below this - Short version: Love the precision and simplicity in the design, while keeping both butterfly and karambit aspects. Great to play with, but it's still functional as well. Thoughts and review details are sectioned off below. So, just skip if you're interested in one in particular.--Design--In terms of butterfly knife, this knife has a really cool design that does justice to butterfly knifes and karambits. They blend both style of knife together really well (to me) and I'll probably never own a cooler "folder." I love how they applied this butterfly style to this karambit. The outside (while it's closed) flips open to become the inside (while open) like you'd expect, but it still retains the classic aspects of the karambit. Great curve, well placed finger groves (even on a butterfly karambit), and the curve of the finger hole feel natural whether it's open or closed. The knife will hand perfectly straight down either way. Small gripe is the little gap left between the finger groves and the blade when it's closed.--The Lock--Straight forward, this lock is unique to me and takes some getting used to, but I love the way they made this design work so they wouldn't lose that classic karambit finger hole. This lock is something that's more reminiscent of spring loaded folders or some assisted opening folders. The part that grasps the lock has a separate pivot all together. It's designed well enough though that, despite the curve, the lock grasps the same spot, open or closed, which is unique for me anyway. Opening it is another thing I'll get to in a bit. The only reason I don't have an issue with it myself is because, when you're trying to close it, it will actually follow the edge of the ring hole to snap into place. It's still a separate motion after flicking it closed, but It's satisfying incredibly satisfying to me to just give the lock pivot a little nudge and then squeeze the handle to lock it into place. --The weight--Off the bat, I thought it would be a little heavier. It'd honestly by my preference if it were. The weird part, I didn't think I'd ever have a gripe with this, is the weight of the knife. It's actually ridiculously well balanced when it's open, almost right in the dead center for mine. I can't speak to higher end butterfly knives, but personally, I'm used to the handle having a tab more weight to it. This plays more into the karambit side of this hybrid that the butterfly side.--Opening and Closing--All that being said about the weight, It makes opening it all the way in one fluid more have a bit of a skill curve on how easily it opens. You wont get as potentially lightning quick of an open as you can with just a straight folding karambit, but lets be real, that's not why you're here. The reason I'm neutral on that is because it'll open fluidly into a grip like you'd hold a Karambit in general. Also, I'll be damned if it doesn't feel amazing when you open it like that. Best way I've found to open it quickly was actually to hold upside, like you'd pull a karambit out of your pocket by the ring. I pull the ring with my index finger and press the lock with my middle. It's slightly off angle, but you can pull it pretty fluidly and quickly open in one swing. On top of that your thumb ends up resting on the lock pivot you need to press in. It's like pinching the end of the knife. Then you just let it fall turning into your grip pretty naturally. Closing it feel great. With your ring finger you can give your wrist a quick flick out and the knife comes swinging closed, keeping that butterfly aspect like you'd perform a Latch Drop.--The Pocket clip--The pocket clip is another one of those things that may or may not be for you. The way the knife was design, it looks like it was meant to be just as functional as it is cool. The clip sits at the exact height in my pocket to both pull the ring hole out and disengage the lock. This I actually respect more that dislike, but not the most concealed for carry that way. My fingers sit right along the top of the clip when it's open. The pinky and ring finger sit right on the end and right after the end of the clip. I can't honestly see them putting it anywhere else though unless the ring had a 2nd layer that functioned as a pocket clip. But, that'd take away from being able to pull it like you would a karambit. It's not obtrusive for my hands, but might be for someone else's.--The handle Material--I thought the handle material i thought would feel a bit better in my hands, have a bit more grip to it like a cord (thought obviously not) or a rubber and be metal inside. The skeleton's very thin though and the handle material feels more like it was made for a more textured grip that's also supposed to be light weight.--The Blade--Honestly, the blade I don't have much to say on yet. It doesn't feel like anything crazy in terms of metal used for knives, but the entire knife seems like it was designed for speed and functionality. I love that, but I digress. The blade is wicked sharp and will probably slice you more than you'd think if your fingers are in the way when you close it. I mean, not that I'm speaking from experience or anything, hahaha. I can just see how easily it cuts through everything I've tried so far The two things I've noticed are that the blade holds that sharp edge really well so far and it "feels" fluid with the knife, not some blade tacked on. Light and strong. Overall? - Great buy, no regrets. Expected the handle to feel differently, but I get why they went the way they did and still love the knife.
Mantis MK-4 Vuja De Balisong Karambit Crossover 2" Blade, Black G10 Handles
rated 5 stars out of 5
New York
Dec 22, 2019
Pros: Handle Material, Handle Feel, Weight, Ease of Opening
Cons: Overall Quality, None
Truly a gem
I’m a casual balisong flipper and they just became legal in my city again, so the first thing I did was order a bear and son and this baby right here. This is hands down the coolest little knife on this site. The g10 handles feels great and it’s so satisfying opening this thing up.I have two qualms, then being how loose this thing came out if the box and the spring latch not operating at all. I think the second issue has to do with the first as when i was flipping this, some screws came out and I think it unwinded the spring. It actually sucks because it adds another step to opening and closing because you have to manually fit the latch, instead of the squeezing once you flip it. I’ll still give it 5 stars though because there’s honestly nothing like it and this will be my EDC for years.
Mantis MK-4 Vuja De Balisong Karambit Crossover 2" Blade, Black G10 Handles
rated 4 stars out of 5
Annapolis, MD
Mar 15, 2018
Pros: Blade Material, Handle Feel, Overall Quality
Cons: Ease of Opening, Blade Sharpness, None
All Goods Things Come...
15 years ago, the idea of a folding, balisong type karambit was a novelty and a very expensive one at that since most were custom made and, with parts and labor, anywhere from $500-800. Now that time has passed, the price has come down and I was tempted to get this and try it out. It has been satisfying if not super purchase. I say this because the action could be just a little easier but with practice, it becomes better. One thing I do like about this is how well this was designed; even closed, it serves as an excellent knuckle duster as part of the works protrudes out when folded to act as a textured pommel for striking. I tested it out on a windshield in an auto graveyard and it packs a punch! I am having a friend put just the tiny bit (1cm) of edge on the tang of the blade. My one pet peeve about folders is that they force the blades to be single edged and I prefer my karambits to have the traditional double edge. These are quibbles that can be taken care of with proper tools. Thank you for making this!
Read all 26 Reviews »


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