I couldn't get any other sun shade for my bushnell trophy 3-9x40 mildot than the generic hawke one from the deben 2006 book as it doesnt take a proper screw in.
It cost £10 and is just a rubber shade you slip on with sizes ranging from 32 - 50 objective lens. If you get a deben book or go to them online it explains how to choose the correct shade by measuring the outer diameter of the front of the scope.
To be honest although its well made and easy to get the correct size I dont think its worth a tenner, its just a band of rubber! Five quid or less would be more in order.
I hope it eliminates the glare I get from time to time, I wont know until next HFT shoot.