This is the Badger Ordnance Cats Eye seen in the M134 video. It is a dual purpose lens cap and anti-reflection device for the Leupold M151 Spotting Scope.
In the closed position the Cats Eye lens cap protects the objective lens and mitigates visual signature detection. In the open position it allows full use of the spotting scope in all power ranges, while still offering a drastically reduced visual signature.
Tags: Badger Ordnance
Pics of it with NVG and capture devices attached?
This.
https://twobirdsflyingpub.files.wordpress.com/2011/10/dsc00440.jpg
If you Google “bagder ordnance slick” in image page there are several pics of it with NV and thermal clip-ons.
Given that most of the objective lens is covered even in the open position, I wonder how darker the image appears verses without it installed. With that said, looks awesome, I’ll be considering it when I finally get around to picking up a spotting scope.