- Blade: 4" 154CM, Saber Grind, Stonewash
- Handle: 5.25" Black Aluminum
- Weight: 5.5 oz
- Pocket Clip: Right Hand, Tip-Up
- Opener: Push Button Automatic, Safety Switch
- Lock Type: Plunge Lock; Secondary Safety
- Origin: USA
- Model: TR-4.1
The ProTech TR-4 is the newest release of Tactical Response Automatic Knives from ProTech Knives, an industry leader in autos. The ProTech TR4 features a 4" stonewashed finish standard edge blade. The 5.25" ergonomically designed handle is made from T6 6061 black aluminum for lightweight (5 oz) yet durable handling. The TR4 fires hard and has rock solid lockup. The ProTech TR-4 features an upgraded sliding safety on the front of the handle so there are no accidental deployments.