Skip to content
  • 💸 Get more for your budget with low-priced deals! 💸
  • 💸 Get more for your budget with low-priced deals! 💸
Benchmade StoreBenchmade Store
    • No products in the cart.

  • Cart

    No products in the cart.

  • Automatic Knives
    • Boker (Auto)
    • Pro-Tech (Auto)
    • Benchmade (Auto)
    • Microtech (Auto)
    • Kershaw (Auto)
    • Hogue (Auto)
    • California Legal (Auto)
    • SOG (Auto)
    • Spyderco (Auto)
  • Spring Assisted Knives
    • Kershaw (Assisted)
    • HTM Knives (Assisted)
    • CRKT (Assisted)
    • SOG (Assisted)
    • Schrade (Assisted)
    • Benchmade (Assisted)
    • Gerber (Assisted)
    • Case (Assisted)
  • Multi-Tools
    • Gerber (Multi-Tools)
    • CRKT (Multi-Tools)
    • SOG (Multi Tool)
    • Leatherman Multi-Tools
    • Boker (Multi-Tools)
  • Knife Accessories
    • Knife Sheaths
    • Knife Handle Scales
    • Knife Sharpeners
    • Knife Cases & Storage
    • Toolkits
    • Paracord
    • Replacement Parts
    • Beads & Lanyards
    • Lubricants & Cleaners
  • Utility Tools
    • Axes & Hatchets
    • Saws
    • Scissors & Shears
    • Shovels
    • Swords
Home / Automatic Knives
  • Boker Dessert Warrior Kalashnikov Dagger Automatic Knife (3.25" Blue) Donut -Benchmade Store Boker Dessert Warrior Kalashnikov Dagger Auto Donut Blue 01KALS72NSOI BHQ 108010 jr
  • Pro-Tech Godfather Automatic Knife Black W/ Maple Burl (4" Black Plain) 906 BK -Benchmade Store 906BK
Sale!
Pro-Tech Damascus Custom Runt J4 Automatic Knife W/ Carbon Fiber 4400-D -Benchmade Store protech 4400 d j4 runt damascus custom cf
Pro-Tech Damascus Custom Runt J4 Automatic Knife W/ Carbon Fiber 4400-D -Benchmade Store protech 4400 d j4 runt damascus custom cf back
Pro-Tech Damascus Custom Runt J4 Automatic Knife W/ Carbon Fiber 4400-D -Benchmade Store protech 4400 d j4 runt damascus custom cf back

Pro-Tech Damascus Custom Runt J4 Automatic Knife W/ Carbon Fiber 4400-D

$339.00 Original price was: $339.00.$95.99Current price is: $95.99.

SKU: BHQ-11295 Category: Automatic Knives Tag: Pro-Tech
  • Secure Payments, Secure Shopping
  • Buy Quality, Live Better
  • No-Questions-Asked Returns
  • Service that stands out, online and always timely.
Browse
  • Automatic Knives
    • Benchmade (Auto)
    • Boker (Auto)
    • California Legal (Auto)
    • Hogue (Auto)
    • Kershaw (Auto)
    • Microtech (Auto)
    • Pro-Tech (Auto)
    • SOG (Auto)
    • Spyderco (Auto)
  • Knife Accessories
    • Beads & Lanyards
    • Knife Cases & Storage
    • Knife Handle Scales
    • Knife Sharpeners
    • Knife Sheaths
    • Lubricants & Cleaners
    • Paracord
    • Replacement Parts
    • Toolkits
  • Multi-Tools
    • Boker (Multi-Tools)
    • CRKT (Multi-Tools)
    • Gerber (Multi-Tools)
      • Gerber Armbar
      • Gerber Center-Drive
      • Gerber Dime
      • Gerber Prybrid
      • Gerber Stake Out
    • Leatherman Multi-Tools
      • Leatherman Charge Series
      • Leatherman Free
      • Leatherman Raptor
      • Leatherman Wave
      • Leatherman Wingman
    • SOG (Multi Tool)
  • Spring Assisted Knives
    • Benchmade (Assisted)
    • Case (Assisted)
    • CRKT (Assisted)
    • Gerber (Assisted)
    • HTM Knives (Assisted)
    • Kershaw (Assisted)
    • Schrade (Assisted)
    • SOG (Assisted)
  • Uncategorized
  • Utility Tools
    • Axes & Hatchets
    • Saws
    • Scissors & Shears
    • Shovels
    • Swords
  • Description
  • Additional information
  • Reviews (0)

This Limited Edition Custom Runt J4 features a Chad Nichols mosaic high carbon Damascus blade. The handle is silver aluminum with carbon fiber inlays and a matching push button insert. The pocket clip is satin finished titanium.

The Pro-Tech Runt J4 is an automatic knife with a 1.94″ California legal blade. The Runt opens with rocket force and has superb lockup. The tip-down carry pocket clip makes it a great choice for everyday carry.

Overall Length

5.27"

User

Right Hand

Finish

Damascus

Best Use

Everyday Carry

Country of Origin

USA

Model Number

4400-D

Model

Runt

Brand

Pro-Tech

Lock Type

Button Lock

Opener

Push Button

Knife Type

Automatic

Pocket Clip

Tip-Down

Weight

1.95 oz.

Blade Length

1.94"

Frame/Liner

Aluminum

Color

Black, Gray

Handle Material

Carbon Fiber

Handle Thickness

0.44"

Handle Length

3.33"

Edge Type

Plain

Blade Grind

Flat

Blade Style

Drop Point

Blade Material

Damascus

Blade Thickness

0.11"

Product Type

Knife

Reviews

There are no reviews yet.

Be the first to review “Pro-Tech Damascus Custom Runt J4 Automatic Knife W/ Carbon Fiber 4400-D” Cancel reply

Related products

Sale!
Pro-Tech TR-5 Automatic Knife Black (3.25" Stonewash)
Quick View

Automatic Knives

Pro-Tech TR-5 Automatic Knife Black (3.25″ Stonewash)

$250.00 Original price was: $250.00.$97.99Current price is: $97.99.
Sale!
Pro-Tech TR-3 Automatic Knife Custom PK Anodized "Trout" Print (3.5" Black)
Quick View

Automatic Knives

Pro-Tech TR-3 Automatic Knife Custom PK Anodized “Trout” Print (3.5″ Black)

$239.95 Original price was: $239.95.$96.99Current price is: $96.99.
Sale!
Piranha Amazon Automatic Knife Burnt Orange Tactical (3.45" Black Serr)
Quick View

Automatic Knives

Piranha Amazon Automatic Knife Burnt Orange Tactical (3.45″ Black Serr)

$169.95 Original price was: $169.95.$96.99Current price is: $96.99.
Sale!
Microtech Stitch-A S/E Automatic Knife Black (3.75" Black)
Quick View

Automatic Knives

Microtech Stitch-A S/E Automatic Knife Black (3.75″ Black)

$306.00 Original price was: $306.00.$95.99Current price is: $95.99.
Sale!
Microtech Socom Elite S/E Automatic Knife (4" Stonewash) 160A-10
Quick View

Automatic Knives

Microtech Socom Elite S/E Automatic Knife (4″ Stonewash) 160A-10

$320.00 Original price was: $320.00.$99.99Current price is: $99.99.
Sale!
Pro-Tech Godfather Automatic Knife Black W/ Maple Burl (4" Black Plain) 906 BK
Quick View

Automatic Knives

Pro-Tech Godfather Automatic Knife Black W/ Maple Burl (4″ Black Plain) 906 BK

$239.00 Original price was: $239.00.$96.99Current price is: $96.99.
Sale!
Piranha Blue P-1 Pocket Automatic Knife (3.2" Mirror Serr)
Quick View

Automatic Knives

Piranha Blue P-1 Pocket Automatic Knife (3.2″ Mirror Serr)

$170.00 Original price was: $170.00.$99.99Current price is: $99.99.
Sale!
Pro-Tech Harkins ATAC D/A Automatic Knife CF W/ Thumb Plate (3.25" Stonewash)
Quick View

Automatic Knives

Pro-Tech Harkins ATAC D/A Automatic Knife CF W/ Thumb Plate (3.25″ Stonewash)

$345.00 Original price was: $345.00.$99.99Current price is: $99.99.
MY ACCOUNT
  • Cart
  • Checkout
  • My account
  • Wishlist
ABOUT US
  • About Us
  • FAQ
  • Returns & Exchanges
  • Delivery
  • Contact Us
LEGAL
  • Privacy Policy
  • Payment Method
  • Shipping Policy
  • Term and Conditions
Signup for Newsletter

Sign up for exclusive offers, original stories, events and more.

[contact-form-7 id="15"]
Copyright © 2026 Benchmade Store . All rights reserved. This site is protected by copyright and trademark laws under US and international law.
  • Automatic Knives
    • Boker (Auto)
    • Pro-Tech (Auto)
    • Benchmade (Auto)
    • Microtech (Auto)
    • Kershaw (Auto)
    • Hogue (Auto)
    • California Legal (Auto)
    • SOG (Auto)
    • Spyderco (Auto)
  • Spring Assisted Knives
    • Kershaw (Assisted)
    • HTM Knives (Assisted)
    • CRKT (Assisted)
    • SOG (Assisted)
    • Schrade (Assisted)
    • Benchmade (Assisted)
    • Gerber (Assisted)
    • Case (Assisted)
  • Multi-Tools
    • Gerber (Multi-Tools)
    • CRKT (Multi-Tools)
    • SOG (Multi Tool)
    • Leatherman Multi-Tools
    • Boker (Multi-Tools)
  • Knife Accessories
    • Knife Sheaths
    • Knife Handle Scales
    • Knife Sharpeners
    • Knife Cases & Storage
    • Toolkits
    • Paracord
    • Replacement Parts
    • Beads & Lanyards
    • Lubricants & Cleaners
  • Utility Tools
    • Axes & Hatchets
    • Saws
    • Scissors & Shears
    • Shovels
    • Swords
  • Login

Login

Lost your password?

Register

Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.