Nice build quality. Top flipper works, but I prefer the reverse flick, which is easy on this knife. The knife handle is a little thicker than I expected, but it's not a bad thing. It feels good and very comfortable in hand. Action is smooth. After a few drops of KPL and flicking it just gets better. Nice acoustics when the blade locks open. Good access to the lock bar, and super easy to disengage. Blade came really sharp out of the box. I have 7 Kubeys, they are all really good.