ProTech TR (tactical response) knives are super solid with a great feel.  They have a great snap and super lock up, just what you would expect from a ProTech knife.

Pro-Tech TR-4

ProTech TR (tactical response) knives are super solid with a great feel.  They have a great snap and super lock up, just what you would expect from a ProTech knife.  The ProTech TR series of knives are all made of the highest quality materials available, manufactured and assembled painstakingly to produce a factory production knife with the tolerances of a custom made knife costing hundreds more.  Rest assured that your ProTech TR knife will rise to any challenge put before it.  As with all ProTech Knives, the TR series carries a limited lifetime warranty and Dave, the founder and owner of ProTech Knives, personally stands behind every ProTech knife made.  Specs: Overall Length: 9.25", Blade Length: 4", Cutting Edge: 3.5", Blade Thickness: .13", Closed Length: 5.25", Weight: 5.5 oz. Tip up carry

ProTech TR-4

Protech Knives TR-4.F3 Feather Grip automaic knives

Protech Tactical Response 4 TR-4.F3 Automatic Knife Feather Grip