Forged iron head

1. An iron-type golf club head comprising:

a main club body, an insert, a cap, and a detachable weight;

wherein the main club body comprises:

a front, a rear, a toe end, a heel end, a strikeface, a strikeface front surface configured to impact a golf ball, a hosel configured to receive a golf shaft, a top-rail, a sole, a strikeface rear surface, and a perimeter sidewall formed by the top rail, the sole, the toe end and the heel end;

wherein the perimeter sidewall extends rearwardly generally perpendicular to the strikeface;

wherein a back cavity is defined by the perimeter sidewall and the strikeface rear surface; and

wherein the back cavity is open toward the rear of the main club body;

wherein the perimeter sidewall further comprises a locking groove recessed into the perimeter sidewall at least partially surrounding the strikeface rear surface;

wherein the locking groove is recessed into the perimeter sidewall in a direction parallel to the strikeface rear surface offset rearwardly from the strikeface rear surface;

wherein the main club body further comprises a first material having a first density;

wherein the insert comprises:

an insert front surface, an insert rear portion, and an insert locking flange;

wherein the insert is configured to be received within the back cavity, and the insert locking flange is configured to be received within the locking groove;

wherein the insert front surface is configured to conform with and be directly adjacent to the strikeface rear surface;

wherein the insert rear portion further comprises an upper section, a muscle back portion, and a transition portion between the upper portion and the muscle back portion;

wherein the insert muscle back portion comprises a cylindrical void;

wherein the insert further comprises a second material having a second density;

wherein the main club body further comprises an aperture in the heel end such that the aperture is a hole open to a heel end outer surface and also open to the back cavity;

wherein when the insert is received within the back cavity, the aperture is aligned with the cylindrical void;

wherein the detachable weight is configured to be received within the cylindrical void through the aperture;

wherein after the detachable weight is received within the cylindrical void, the aperture is sealed with the cap.

2. The iron-type golf club head of claim 1 , wherein the first material comprises a first metallic alloy.

3. The iron-type golf club head of claim 1 , wherein the first material first density is greater than the second material second density.

4. The iron-type golf club head of claim 1 , wherein the insert upper portion comprises a first insert thickness, and the insert muscle back portion comprises a second insert thickness;

wherein the second insert thickness is greater than the first insert thickness.

5. The iron-type golf club head of claim 4 , wherein the second insert thickness may vary.

6. The iron-type golf club head of claim 1 , wherein the cylindrical void is contained entirely within the insert muscle-back portion.

7. The iron-type golf club head of claim 1 , wherein the detachable weight comprises a toe end portion, a center portion, and a heel end portion; and

wherein the detachable weight comprises a single material.

8. The iron-type golf club head of claim 1 , wherein the detachable weight comprises a toe end portion, a center portion, and a heel end portion; and

wherein the detachable weight comprises a first weight material and a second weight material; and

wherein the first weight material has a density less than the second weight material.

9. The iron-type golf club head of claim 8 , wherein

the heel end weight portion comprises the second weight material.

10. The iron-type golf club head of claim 8 , wherein

the toe end weight portion comprises the second weight material.

11. The iron-type golf club head of claim 1 , wherein the detachable weight is detachably secured within the cylindrical void by a press fit, and wherein the cap is threaded; and the weight is further secured by means of the threaded cap.

12. The iron-type golf club head of claim 1 , wherein the locking groove comprises a depth of recession in a range of 0.1 inch and 0.5 inch.

13. The iron-type golf club head of claim 1 , wherein the locking groove comprises a locking groove bottom and two locking groove sidewalls such that the locking groove is open to the main body back cavity prior to the back cavity receiving the insert.

14. The iron-type golf club head of claim 13 , wherein the locking groove sidewalls further comprise recessions perpendicular to the locking wall sidewalls.