The 2017's new AKC OTF is called "F16", like the Fighting Falcon supersonic fighter aircraft of the United States Air Force. This is an awesome knife, strong and solid mechanism with it's double springs inside for a durable and faster opening. Blade play is almost zero.minimum blade play. Press the button forward and the blade rockets out. Pull the firing button back and the blade retracts safely. Very simple! The action is fast and the knife is light and ergonomic. The aluminum handle has a Military Green finish with black engraved rubber insert for a safe grip. Satin razor sharp bayonet blade, black pocket clip.