A non-ballistic turret model can not be retrofitted after the fact. The link that is posted above is for the ballistic collet which is made by swarovski based on the information that you provide them. The collet slips over the existing ballistic turret.
It is the same type of thing that that Kenton Industries does for Zeiss on their target turret model rifle scopes.
Take a look at SportOptics
and give them a call. They can answer any questions you have about Swarovski Optics.
I believe the models you would want to take a look at would be 59884