Well roger it all depends on what one you have. If you have a CB older than say three years it probally has the standard barrel. If you got one last year there's about a fifty/fifty chance you have the micro flight barrel. And all but two of the models this year have the micro flight. If you have the standard barrel the flats will shoot fine out of your bow. I only found this out by accident as all my arrows vanes were getting screwed up and when I went into the closet I found some old flats. Went to shoot them and my arrow groups got alot bigger. Well I went to the shop and noticed that horton didn't even offer the flats anymore. Made some phone calls and found out that this was why. Check your barrel out and let us know how things turn out for ya.