Yes, Only the arm is broken. Sorry was just doing a quick reply on my iphone. And thank you for the link!Couldn't really understand your last post but it sounds like your saying just the arms are broke? If so here are the "low" and "high" bars.
Link
Okay thank you sir!It varies on your FPS I believe that or the gram BB you use. If you're shooting hot I think you want the low and if you're around stock FPS go for the high, if your original chamber was getting you perfect hop get the high since chambers are shipped with high arms.