The TR-4 is the largest model in Pro-Tech's Tactical Response Series, designed to meet rigorous demands with its multi-purpose 4” blade. Featuring a secondary slide safety, a built-in 416 hardened stainless steel glass breaker/lanyard loop at the butt end, and Pro-Tech’s renowned coil spring action, this knife is a standout in both form and function. Initially developed for a specific US military requirement, the TR-4 has proven itself as an ideal choice for anyone seeking a full-sized, feature-rich automatic folder.
 
This model boasts a black anodized 6061-T6 aluminum handle and a stonewash/satin finished 154-CM stainless steel saber ground drop point blade. The knife includes satin finished hardware, with the blade prominently marked with the Pro-Tech logo and model information. It comes brand new in box with a Pro-Tech nylon sheath, ready for action.
 
Specifications:
Blade Length: 4"
Handle Length: 5-1/4"
Overall Length: 9-1/4"
Handle Material: Aluminum
Blade Material: 154-CM Stainless Steel
Blade Style: Drop Point
Blade Finish: Stonewash/Satin
Edge Type: Standard
Model/Pattern: TR-4 (Tactical Response 4)
Knife Type: Automatic Folder
Lock Type: Button Lock
Weight: 5.5 oz.
Country of Origin: USA
 
The Pro-Tech TR-4 is a robust, feature-packed automatic knife designed for reliability and performance in any situation. Whether for military, tactical, or everyday use, the TR-4 stands out as a superior choice.