My SH-4 Gen 2 6-24 just arrived. It came with the battery packaged separately. I don't know if I'm just missing something, but I can't find any way to open the battery compartment. It's not mentioned in the manual anywhere, and there are no obvious markings on the scope itself. One would think you simply unscrew the end cap of the illumination turret, but it's basically impossible to turn without spinning the turret itself, and there is no easy way to torque on it either. Any help is appreciated.