The USGA has confirmed that both Ferro MC and Ferro CB irons conform with the Rules of Golf.

One clear answer for both models

Both Ferro iron models—the MC muscle cavity and the CB cavity back—conform with the Rules of Golf. Golfers can choose either model for competition when the clubs are built and maintained within their conforming specifications.

Conformance addresses whether the club design meets the equipment requirements in the Rules of Golf. It does not determine which model is right for your swing or guarantee a particular result on the course.

Choose the profile that fits your game

Ferro MC has a compact muscle-cavity profile focused on control and direct feedback. Ferro CB has a cavity-back profile designed for added stability and forgiveness. The two models also have different loft progressions, so compare your ball flight and carry gaps rather than relying on the iron number alone.

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Ferro MC and Ferro CB both conform with the Rules of Golf.