I'm wanting to get a replica of the trijicon rmr sight (because the real steel version is expensive and I dont have that kind of money) and the only types I could find were auto adjusting to light which I don't know if that would actually work. Here they are: This one I'm not so sure about and its on Ebairsoft so I'm gussing I would have to pay for oversea shipping http://www.ebairsoft.com/style-sensor-reflex-sight-p-6365.html Here is one from P-X airsoft which is in Asia somewhere: http://www.px-airsoft.com/showroom/model/T0002/templateStoreDeliveryMethodList.do And here is an AABB one from Specwarfare airsoft which is in Hong Kong http://shop.specwarfare.com/products/2456-aabb-tj-rm-style-sensor-red-dot-reflex-sight-for-airsoft.aspx so they are all overseas which I dont really like. My questions are: 1. Will the auto brightness work? 2. Are these websites trustworthy? 3. Are there any US based companies that sell these? hopefully Ill get some answers.