Thinking about equipping my carbine lights with a red filter to allow for use in task lighting if needed. Not sure yet but anyways... the polytac is easy as the streamlight red filter is only about $1(. SureFire G2X is another story as their filter is over $50. Any good but economic flip-up filters for the g2x? I guess while I'm at it any suggestions for my aaa thorfire or aa fenix ?