Normally, operating a light crossbow requires two hands. However, you can shoot, but not load, a light crossbow with one hand at a –2 penalty on attack rolls. You can shoot a light crossbow with each hand, but you take a penalty on attack rolls as if attacking with two light weapons. This penalty is cumulative with the penalty for one-handed firing.
This is part of the Revised (v.3.5) System Reference Document. It is covered by the Open Game License v1.0a, rather than the Creative Commons Attribution Sharealike License. To distinguish it, these items will have this notice. If you see any page that contains SRD material and does not show this license statement, please contact an admin so that this license statement can be added. It is our intent to work within this license in good faith.