The Phone Skope Optic Adapter can stay on the rifle scope eyepiece, allowing the user to look through the scope as normal. This means that the entire system does not need to be removed to use the scope and it only takes a few seconds to remove the phone or camera from the scope. The binding mechanism makes for quick attachment and detachment. Users are not stuck with having to choose between using their scope with the camera or alone since it is so easy to switch back and forth. Works with most rifle scopes (eyepiece must be 100% round), works on bolt action rifles. The adjustable eye relief does not affect eye relief of the rifle scope.