The material below is Open Game Content
You can load crossbows with blinding speed and even fire them in melee with little fear of reprisal.
Prerequisites: Dex 15, Point Blank Shot, Rapid Reload, Rapid Shot
Benefit: The time required for you to reload any type of crossbow is reduced to a free action, regardless of the type of crossbow used. You can fire a crossbow as many times in a full attack action as you could attack if you were using a bow. Reloading a crossbow for the type of crossbow you chose when you took Rapid Reload no longer provokes attacks of opportunity.
Special: A fighter may select Crossbow Mastery as one of his fighter bonus feats. A ranger may select Crossbow Mastery in place of Manyshot for his improved combat style at 6th level.
The material below originates in a 3PP source (License).