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Message: <blockquote data-quote="stephen b" data-source="post: 3263418" data-attributes="member: 80110"><p>I personally have never had a GA model. I was only making the switch of eye cups between traditional leatherette models. And even then it was only between the one older Habicht that I have ( a 1965 10x40), and current Habichts - the 8x30 and a 7x42. Based on that ( and how easily they switched out) I made the assumption that Swarovski has stayed with the same threading and ring size and that all of them were interchangeable as far as being able to be screwed on the threads. I now realize that that assumption may have been erroneous. I knew the ER was probably different, but it did make sense to me that Swarovski would make this simple and easy for manufacturing.</p></blockquote><p></p>