Product Review (submitted on January 8, 2018):
One review mentioned play in the blade. There is a star screw in the handle near the blade. This controls the amount of play. If it's too tight you can't flip it open and closed easily, if it's too loose you'll get some blade play. But its adjustable and it holds it's position. I have over a dozen Benchmades and I've gotten everyone easily adjusted to a tension where it flips open and closed quickly and easily, but there is no play in the blade. All you need is a "star" screwdriver.