50mm F2 Summicron-M aperture ring

[rosewood1969]

Dear friends,
I find the above to be quite loose on my lens.
A simple push will move the apertures.
Not sure if its inherent for this model.
Does anyone face this?
If yes, any recommendations on where to fix it?
thanks

 

[artspraken]

Yes my 50 cron is quite loose also.

 

[rosewood1969]

thanks bro for the reassurance!