An accurizer is provided for improving the accuracy of handguns by eliminating or lessening the potential misalignment of the barrel from which a projectile is fired and the sights used by the operator to aim at the target. There is provided a barrel having a modified area having an outside surface machined down and threaded. There is further provided a bushing having an outside tapered surface and inside threaded surface. A slide is provided having an inside surface tapered to fit the bushing.