According to page 62 of the Codex: Blood Angels (5th), the Space Marine Bike are equipped with twin-linked bolter.
According to the army list, neither Attack Bike Squad nor Bike Squad mentions this option.
My understanding is that even if not mentionned in the army list (and not errata has been written on this), the attack bike will thus have the TL bolter + a heavy bolter. Both SM on the bikes also carry a bolter pistol.
My understanding is that during the shooting phase I can fire both TL bolter and heavy bolter (same target)? Or that I can fire the heavy bolter and a bolter pistol, or even just two bolter pistols.
Am I correct?
Now, if an attack bike loses a life point (out of two), can I still fire both TL bolter and heavy bolter?