Clip and go - Armasight Apollo 336 1x50mm Thermal Imaging Clip-On System w/FLIR Tau 2

Using with my Mark 4, everything is good so far. I like the design of this thing, buttons and menu are pretty comfortable so no issues with that during the hunt. I got A DVR fom Armasight too, prrtty cool that you can also use it as a battery, especially when 2 CR123 in the scope itself don't live for too long.