These binoculars aren't fake, they're made by Fujinon for government contracts. I emailed fujinon about them as I also have a pair and was looking to sell them on ebay but was messaged by another user regarding their authenticity. I knew they weren't fake, but knew the guy wouldn't take my word for it, searched through google, came onto this site and a few of these threads here, saw what was said, and thought I'd set the record straight.
You can't find them in your magazines because they aren't commonly available for purchase. But they are from Fujinon, the rubber armor is to help prevent rain damage and the minor shock. Here's the reply I received from fujinon -
Thank you for your inquiry.
The binoculars you have are a special binocular made for government contracts. They were specially made, and are not exactly the same as the Fujinon Polaris 10x70 FMT-SX binoculars that are "Made in Japan". The optics in them are not exactly the same, as they were made to fulfill government requirements. To call them a knock-off isn't exactly accurate, since we did make the binoculars ourselves. However, they are not same as the "Made in Japan", non-rubber armored model.
I hope this answers your question.
if you have any other questions, please let me know.
Product Support Coordinator
FUJIFILM North America Corporation
Optical Devices Division