Any advice would be appreciated. Will losing the back of the iron effect performance or is it merely cosmetic? Tia.

I've done that too. Just thought I'd ask here incase I drew a blank from them.

Just a thought, but you could reach out to Cobra to see if their tech folks can offer any insight on the matter: https://www.cobragolf.com/contact-us

6 years old. Bought new. I've had to have a couple of heads glued on during the last couple of years so that makes sense. Although the head on this one is still solid.

I'd recommend epoxying something over that just to keep dirt and mud out of it. I bet your local pro shop could fix that up pretty cheap. Also, If that just came off, it might be the epoxy holding the head to the shaft might be breaking down too. You might just take a swing and the head will come off. It happened to my 4 iron recently. How old are the clubs? Mine were probably 8 or 9 year old Callaway Razr X irons

Thanks for getting back. I don't have the back only noticed when cleaning after a range session. I can live with it if it's only cosmetic. Just picking people's brains before looking for a replacement.

Possibly.....

The cover is really more for appearance. As long as it doesn't affect the weight too much or the aerodynamics of the club.

Do you have the back? It can be epoxied back on, and you can do it yourself. Its easy to repair.