S&W SW50BT Tactical Extreme Ops Automatic Knife.
3.27" Blade, 4.5" Closed, 4.5oz. The button acts as a positive lock both opened and close.
Plain Edge Tanto Blade Length (inches): 3.28 Blade Material: 420C Carry System: Pocket Clip
Handle Material: Aluminum Overall Length (inches): 7.75 These do come with safeties.
Either way A Very Impressive knife for the money.
these are conversions & as such may have light handling scuffs etc.