Bullet Drop - horrible. absolutely horrible
ANS Razor Ion, Egg, Freak kit, Black CP rail and red CP on/off, 68/4500 tank
Easy on/off turn
none that I can think of right now.
I recently purchased the on/off for my black Ion. I recently tested it at the field and all i had to say was WOW. The rail never moved or got loose in any way, the on/off stayed on perfectly tight, and releasing pressure was sooo easy with such a light knob. This setup has me hooked on CP for most of my parts now.
Buy it. You won't regret it. I give this a 9 because nothing is perfect, even if I personally have found no flaws.