Royal crossbow

The Royal crossbow is the crossbow released with the Queen Black Dragon. It can only be made by acquiring the royal crossbow components from the Queen Black Dragon's treasure chest after defeating her. One must attach the components, by talking to Thurgo near Mudskipper Point, to a Coral crossbow in order to create the Royal Crossbow. The components required are: You must charge the crossbow up by brandishing it in front of the Queen Black Dragon's extreme fire attack.
 * Royal frame
 * Royal torsion spring
 * Royal sight
 * Royal bolt stabiliser

The royal crossbow requires 85 Ranged and 70 Smithing to create and it can ONLY shoot royal bolts but can shoot multiple bolts at once. It works extremely well against bosses and in long fights as it has a multiplier that gets larger if you are fighting a monster for a long period of time.

Royal crossbow vs Chaotic crossbow
The Royal crossbow beats the Chaotic crossbow ranged attack bonus by 15 making the Royal crossbow the most accurate crossbow in the game. The Chaotic crossbow still remains the most accurate crossbow in game that fires metal bolts.

The royal crossbow has a max hit of 600 in PvP situations.