Composite Longbow +3

Composite Long Bow +3 is an enchanted weapon. It has +3 bonus to thaco and speed and weighs 3 lbs less than a normal composite longbow. It can use all arrows as ammunition. This item appears in Baldur's Gate II: Throne of Bhaal. It's for sale at the Tankard Tree in Saradush and sold by the merchant in the coutryside near the city.

In-game description
"This long bow is marked with the seal of a sunburst. It probably once was a bow used by guards in the service of the god Amaunator. These guards would use the enchanted bows to keep the priests of that long dead faith safe. Few of these bows still exist, so they are sought after by many archers looking to improve both their accuracy and their lethality. This bow requires a strength of 18 to use."