SIG Sauer by Hogue K320A Nitron AUTO Folding Knife 3.5" S30V Black PVD Drop Point Plain Blade, Black Polymer Handles - 36330
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$179.96

MSRP* : $199.95 | You Save* : $19.99 (10%)
rated 4.4 stars out of 5 Read 5 reviewsWrite a Review
Part #: SIG36330 | SIG Sauer Knives
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Description

SIG36330: K320A Nitron AUTO Folding Knife - Drop Point

SIG Sauer by Hogue Knives

Hogue Knives has partnered together with SIG Sauer to deliver a full line of quality SIG Sauer branded knives. These fine tactical and sporting knives represent the ultimate value in tactical folders and fixed blades expressed through Hogue's state-of-the-art manufacturing processes. Made in America by American craftsmen, a Hogue knife at your side is a trusted — and trustworthy — companion, an heirloom quality blade combining the best of old-world craftsmanship and design set in the context of modern-day, real-world applications for a tactical blade.

Deployment is based around a strong, custom-designed, oversized coil spring that has been extensively tested and integrated to provide force along the pivot's entire range of motion. The result is an automatic that kicks open with authority every time you call on it. Each knife is individually tested and laser-etched with a unique serial number before it bears the Hogue name.

The K320 is designed to go hand in hand with the P320 firearm, available in Nitron black, Tactical gray, and M17 coyote tan colorways. The polymer grip and texturing are mimicked here, creating an excellent lightweight grip with plenty of traction. The ergonomics are absolutely fantastic and they've allowed for the pocket clip to be positioned in all four corners of the knife which is pretty rare on an automatic. And then there's the action. Hogue delivers some of the best push-button action on the market and the K320 is no different. It fires with authority so make sure you have a solid hold on the knife before actuating as the knife may go flying. An excellent thumb ramp, finger choil, and lanyard hole round out the features of this near-perfect auto knife which we think it's poised to become one of the premier duty knives that money can buy.

Specifications

  • Blade Length: 3.50"
  • Cutting Edge: 3.00"
  • Closed Length: 4.50"
  • Overall Length: 8.00"
  • Blade Thickness: 0.125"
  • Blade Material: CPM-S30V Stainless Steel
  • Blade Style: Drop Point
  • Blade Grind: Flat
  • Blade Finish: Black PVD
  • Blade Treatment: Cryogenically Heat Treated
  • Handle Material: Black Polymer
  • Handle Thickness: 0.57"
  • Liner Material: Stainless Steel
  • Locking Mechanism: Push Button Automatic with Safety
  • Pocket Clip: Deep Carry Tip-Up/Down, Right/Left Reversible
  • Weight: 4.23 oz.
  • Made in the USA

UPC Code: 743108363300

Related Categories

SIG Sauer Knives, K320 Folding Knives Series, S30V Blade Steel, Zytel Handle Material, Folding Knives, Folding Knives Automatic Knives, Made in USA

Badges

Product Handle Badge: Zytel Handles
Product Clip Type Badge: Pocket Clip
Product Steel Type Badge: S30V Stainless Steel
Product Country of Origin Badge: Made in USA

Customer Reviews

SIG Sauer by Hogue K320A Nitron AUTO Folding Knife 3.5" S30V Black PVD Drop Point Plain Blade, Black Polymer Handlesrated 4.400 stars out of 5 (5 reviews)
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SIG Sauer by Hogue K320A Nitron AUTO Folding Knife 3.5" S30V Black PVD Drop Point Plain Blade, Black Polymer Handles
rated 5 stars out of 5
Rockin Robin
 Florida
Jul 11, 2026
Pros: Blade Material, Blade Sharpness, Ease of Opening, Handle Feel, Handle Material, Lock Ease of Use, Lock Type, Overall Quality, Pocket Clip, Weight
Cons: Sheath
Houge Sig k320A
A Well built Tough Knife. It'll jump outta ya hand, So keep a good grip. Came Extremely Sharp, Still Sheep and it's my EDC. It Matches my P220. If you have a sig, you gotta have this. If you Don't, You gotta have this. And the American Flag print on the clip, Out ,Bleep'n, Standing! Under$200 For a American made knife built this good, Yea it's worth it. Bout 200 after taxes, But if your like me, won't compromise for nothing but the best, Well you just found one!
SIG Sauer by Hogue K320A Nitron AUTO Folding Knife 3.5" S30V Black PVD Drop Point Plain Blade, Black Polymer Handles
rated 5 stars out of 5
Henny
 Texas
Jan 12, 2026
Pros: Blade Material, Blade Sharpness, Ease of Opening, Handle Feel, Handle Material, Lock Ease of Use, Lock Type, Overall Quality, Pocket Clip, Sheath, Weight
Cons: None
Best Auto EDC Knife?
Honestly, I love this knife. It's lightweight, durable, rugged. The auto mechanism works perfectly. The locking mechanism works perfectly as well. I am constantly fidgeting with this knife because of how well both of those work. The blade is super sharp. I can't say enough good things about this knife. Just go get it already! :)
SIG Sauer by Hogue K320A Nitron AUTO Folding Knife 3.5" S30V Black PVD Drop Point Plain Blade, Black Polymer Handles
rated 5 stars out of 5
Basslane
 Rock Hill, SC
Apr 23, 2025
Pros: Blade Material, Blade Sharpness, Ease of Opening, Handle Feel, Handle Material, Lock Ease of Use, Lock Type, Overall Quality, Pocket Clip, Weight
Cons: None
Sig/ Hogue K320A
Its a all around EDC knife and should give many years of use. Its also a automatic which for me is great easy to get it open when needed it does have a lock to keep it safe when not in use. Just a overall well made knife. Thanks to all!!
Read all 5 Reviews »