A GAME-CHANGING MUSCLE BACK CAVITY. Its modern blade profile won over players with a blend of sleek aesthetics, effortless playability, and a piercing ball flight. The MC-501 proved that forgiveness was possible in a blade iron without sacrificing performance. Building on that legacy, Shinei Miura and his design team refined every subtle detail in the MC-502. The result is a blade that delivers enhanced forgiveness and precision, crafted to meet the uncompromising expectations of discerning golfers. Premium S20C Soft Carbon Steel. These Miura MC-502 Copper irons are beautiful with the option for us to put shafts and grips on for you, message for what shaft and grips you would like, if you would like upgraded shafts it will cost extra.