Nero, I bought mine from a dealer that Randolph recommended, Morgan Optical. You can find them here
http://www.morganoptical.net/If you want untinted lenses you will see them on their website right here
http://www.morganoptical.net/lens_color Just scroll down towards the bottom for the clear ones. I opted for the Light HD version with some dioptors bifocals so I can read my vernier sights better up close. Adding the bifocals costs a lot more money than just getting the plain lenses (colored or not) and then using the $20 stick-on bifocal lenses that you can buy from many places. They work great too, but I wanted permanent this time.