Here are some pics of the internals of a RMR DLS315 and an 8500 x50 (S7). If anyone has any knowledge on the differences of the horns, the boards, and the two clear bulbs on the RMR I would greatly appreciate it. The horn on the RMR is open as opposed to closed like in any other RD. Why is that, besides the fact that it's a cheap P.O.S.?