Protech TR-5 Sapphire Blue Automatic Black Aluminum Handle T503-SB

Model: PT-T503-SB
Manufacturer: Protech Knives
Retail: $430.00
In stock (Usually Ships in 24-48 Hours)

Note: Automatic Knives may not be shipped outside of the United States. Additionally we cannot ship to the following states: Delaware, Hawaii, Minnesota, New Jersey, New Mexico, New York, Washington or the District of Columbia.

Blade Length Restrictions may apply to California, Connecticut and Vermont.


  • Sapphire Blue Finish 154CM Blade
  • Black Aluminum Handles 
  • All Black Hardware w/Abalone Push Button
  • Slide Safety Keeps Blade Safely Closed
  • USA Made Hard Hitting Auto


The Protech TR-5 (Tactical Response) Sapphire Blue is a full-size button-lock automatic that is durable, comfortable, lightweight, and fast in the hand. A sub-4 oz. weight makes carrying a breeze. The drop-point blade is simple and functional for both utility and martial use. This version features pristine satin blue finished blade and abalone button.

Crucible 154CM: Originally developed as a stainless bearing steel, 154CM is an improved version of 440C with added molybdenum that offers improved resistance to pitting from corrosion, higher hardness for better edge retention and toughness similar to 440C. Similar to Hitachi ATS-34.



Overall Length 7.63"
Blade Length 3.25"
Sharpened Length 2.88"
Blade Thickness 0.12"
Blade Material 154CM
Blade Type Stainless
Lock Button Lock
Safety Slide
Closed Length 4.38"
Handle Thickness 0.50"
Handle Material Aluminum
Clip Stainless
Clip Position Tip-Up
Weight 3.55 oz.
Country of Manufacture United States