Cold Steel 58SQ Demko AD-15 Scorpion Lock Folding Knife 3.68" S35VN Drop Point Blade, OD Green G10 Handles
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$179.95

MSRP* : $269.99 | You Save* : $90.04 (33%)
rated 4.2 stars out of 5 Read 13 reviewsWrite a Review
Part #: CS58SQ | Cold Steel Knives
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Description

CS58SQ: 58SQ Andrew Demko AD-15

Cold Steel

The AD-15 might be the most comfortable, user-friendly, sub-4-inch tactical folder Cold Steel has ever made! Modeled after Andrew Demko's patented original of the same name, it offers ambidextrous operation and great peace of mind. The saber ground spear point blade comes with a false edge and includes jimping on the spine to assure great piercing ability and edge control when precision cutting is required. The AD-15's unique hybrid handle is what distinguishes it the most; because it features Andrew's famous Scorpion Lock. You see, the bottom portion of the handle has 3D-machined G10 scales mated to steel liners, while the upper portion of the handle, called the "yoke" is crafted from a 3D-machined 6061 aluminum billet that includes an integral back spacer which conceals a strong compression spring. To open the knife, simply engage the thumb stud and watch the yoke rise up until it falls snugly into a deep notch cut in the blade's tang. Held securely by constant pressure from the spring and, supported by the strength of one's grip, the Scorpion Lock is virtually immune from failure!

Specifications

  • Item Number: 58SQ
  • Item Name: AD-15
  • Weight: 6.5 oz.
  • Blade Thickness: 3.8 mm
  • Blade Length: 3.68"
  • Handle: 5.0" Long. 3D Machined G10
  • Overall: 8.50"
  • Steel: S35VN Stainless Steel
  • Pocket Clip: Ambidextrous Stainless Pocket/Belt Clip
  • Made in Taiwan

UPC Code: 705442018681

Related Categories

Cold Steel Knives, Cold Steel Andrew Demko AD-15 Series, S35VN Blade Steel, G10 Handle Material, Folding Knives, Folding Knives Other Lock Types, Andrew Demko

Badges

Product Clip Type Badge: Pocket Clip
Product Handle Badge: G10 Handles
Product Steel Type Badge: S35VN Stainless Steel

Customer Reviews

Cold Steel 58SQ Demko AD-15 Scorpion Lock Folding Knife 3.68" S35VN Drop Point Blade, OD Green G10 Handlesrated 4.231 stars out of 5 (13 reviews)
4.2 out of 5 stars
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Cold Steel 58SQ Demko AD-15 Scorpion Lock Folding Knife 3.68" S35VN Drop Point Blade, OD Green G10 Handles
rated 2 stars out of 5
Knivesiscool
 Earth
Jan 23, 2026
Pros: Blade Material, Blade Sharpness, Ease of Opening, Handle Feel, Handle Material, Lock Ease of Use, Lock Type, Pocket Clip, Weight
Cons: Overall Quality
Catch pin problems
Bought the first AD15 from Amazon and the little pin that catches the handle to close the blade was loose. Returned it, bought one from Knife Center because they're infinitely more trustworthy. Well, pin had the same issue. Knife Center would've happily let me return it, but I sent it off to Cold Steel in the hopes I could get the issue resolved and keep the knife (for an additional $18, mind you. . . there isn't much on the internet about this problem existing, so we'll see what happens, but if you buy this knife, check that pin.
Cold Steel 58SQ Demko AD-15 Scorpion Lock Folding Knife 3.68" S35VN Drop Point Blade, OD Green G10 Handles
rated 5 stars out of 5
Carl
Indiana
May 15, 2022
Pros: Handle Material, Blade Material
Cons: Weight
Demko quality
I mainly purchased this knife because of the scorpion lock. I like to have all the different types of lock ups in my collection. I must say I like this knife a lot, it is built like a tank and feels quite substantially solid in the hand. It is a fairly heavy knife but still carries very well in the pocket. Once I got the hang of it, I can easily open and close it one handed. Overall I think this is a really cool knife with a fun and fidget friendly locking mechanism.
Cold Steel 58SQ Demko AD-15 Scorpion Lock Folding Knife 3.68" S35VN Drop Point Blade, OD Green G10 Handles
rated 4 stars out of 5
5T31n-0V3
 Norway
Jan 29, 2022
Pros: Weight, Handle Material, Blade Material, Overall Quality, Blade Sharpness
Cons: None
yupp
Just got it in the mail today So far, I like it. How ever it does have a sticky lock up, but I guess that will go away over time.
Read all 13 Reviews »