I have three with different color combinations. Love em. What I did because all mine were super hard to deploy is I disassembled each one and took a dremel tool with a fine filing cone and slightly radiused out the ball detent. I took a minimalist approach to it so as not to defeat the whole mechanism, and reassembled the knives. Now I have 3 folders that are easier to deploy and are in constant edc rotation. ZT 0200 in my left pocket for two legged predators, and one of my RATs in my right side pocket for everything else. I can't recommend a better knife for the money-even without the mods that I performed.
at first mine was like that but after a couple hours of watching tv with the wife i opened and shut it many times and now its effortless. didnt take no time to break it in. best 30 dollar folder ever