Any of you gentlemen familiar with the leupold alumina intensifier thread-on accessory line? I understand they have one for use in low ambient light that brightens your view and another with raincote to screw on during adverse weather.I believe they fit onto gold ring riflescopes.Just looking for some info/feedback from any of you guys who might have tried/purchased them. /ubbthreads/images/graemlins/grin.gif