I must admit I made a technical error. I have the CF-9 not the CF-29. According to the Nikon Compendium the CF-9 was for the FM/FE+MD+50f1.4. The CF-29 was for the FM2/3a/FE2+MD+50f1.4. I have used the CF-9 on my Fm2n and FE2 with no problem. I found my CF-9 and it does have the cut out for the MR-3. I believe there must only be a slight difference between the two cases. Hope this helps.