This is a nicely made Tactical Karambit Knife by Vulcan Gear.
Vulcan Gear Tactical Karambit Hawkbill Knife
Variety of styles to choose between Folding (assist open or no assist open) and Fixed Blade
Fixed Blade knife's Length is 7.5" overall with 4" blade
Folding Knife's Length is 6.5" overall with 2.5" blade
The Blade is stainless steel construction and razor sharp