AF/M button is off of my lens

[monicap]

Hi, wondering about servicing an old 75-300 lens to replace the AF/M button. Everything else about the lens seems in good repair. Does Canon sell the parts or am I better off at a local camera store? Thanks for any suggestions.

[ebiggs1]

You may want to check if Canon still services this old lens.  You may find parts are no longer available for it from Canon.

It is always best to let Canon do the repair not a local store if possible. A good used working lens may be cheaper than a Canon repair, though.