They are made in the USA!!! A pioneer of fiber optic & single pin technology. I believe they are the best sights I have ever shot and the brightest(from a variety of copper john, tru glo,extreme, HHA, sword). My experience with the glow rings invloves target shooting, Its more of a focus ring and will blow your mind as to how it will make you focus on your target. Havent really got to use it in low light tho. Not much on shooting multiple pin sights so your on your own with those, I have to recommend the star pro angular in .019. But if you go to vital gears website and contact
ben@vitalgear.net he will answer all of your questions, super nice guy and will help ya out a million.