Golf club head with adjustable center of gravity

A driver-type golf club head comprising:

• a body comprising a crown, a sole, a heel side, a toe side, a face portion, a rear side, an edge portion where the crown connects with the sole, and a channel;
• and
• a weight comprising a base comprising a threaded bore, a cap comprising a through-bore, and a bolt,
• wherein the cap comprises a lower cavity,
• wherein the base is sized to fit within the lower cavity,
• wherein the bolt connects the base to the cap,
• wherein the base and the cap do not make direct contact with one another,
• wherein the channel comprises a first wall, a second wall, a floor, a first rail extending from the first wall, and a second rail extending from the second wall,
• wherein the weight is disposed within and movable to any location in the channel,
• wherein the base and the cap sandwich a portion of each of the first and second rails,
• wherein tightening the bolt reversibly fixes the weight to the rails, and
• wherein moving the weight within the channel changes both a moment of inertia and a location of a center of gravity of the golf club head.

A golf club head comprising:

• a composite crown;
• a metal body comprising a sole, a heel side, a toe side, a face portion, a rear side, and a channel;
• an edge portion where the composite crown connects with the metal body;
• and
• a weight comprising a base comprising a threaded bore, a cap comprising a through-bore, and a bolt,
• wherein the cap comprises a lower cavity,
• wherein the base is sized to fit within the lower cavity,
• wherein the bolt connects the base to the cap,
• wherein the base and the cap do not make direct contact with one another,
• wherein the channel comprises a first wall, a second wall, a floor, a first rail extending from the first wall, and a second rail extending from the second wall,
• wherein the weight is disposed within and movable to a plurality of locations in the channel,
• wherein the base and the cap sandwich a portion of each of the first and second rails,
• wherein tightening the bolt reversibly fixes the weight to the rails, and
• wherein a distance between the edge portion and a midpoint of the channel remains constant for at least 50% of the length of the channel.