Although I have had luck swapping and fitting speedmaster bezels, I do not recommend it if after the first attempt it does not immediately and firmly click into position. ....and recognising that it has in fact clicked into position is a skill that eludes some people.
The bezels often need adjusting, either at the inside of the bezel, (if too tight) or on the case. Both operations are best left to people who do it for a living, as
@kov says.
I learned about bezel swapping some years ago while living remote from a watchmaker. So it was do it myself or wait 4 months. Often I had to wait 4 months.
By being strict with myself, that is allowing only one attempt (ok two, maybe three attempts but definitely no more) I have not damaged anything.
Since moving back into civilisation I have not swapped a bezel myself.
Here is an oldie but goldie photo
View attachment 648790
Click to expand...