An improved golf club head is provided having a striking face portion, a topline, a heel portion adapted to receive a shaft, a toe portion, and a sole. The improved golf club head includes port holes extending from one or more cavities to allow insertion of a polymer and metal shot into the golf club head. The insertion of a polymer and metal shot facilitates increasing weight and/or biasing weight distribution of the golf club head. The improved golf club head may be manufactured by forging the main body of the golf club head, machining a recess into the main body, and attaching an insert in the recess. The recess forms a cavity and allows a port hole to facilitate insertion of the polymer and metal shot into the golf club head. After insertion, the polymer is cured to form the golf club head.