I was just reading through the NYPD TwinSonic thread and I had a question. I am not an expert in everything, but from everything I've read, the TwinSonic "F" model had flashers that were rectangular in shape above the bottom half of a 12X mirror. However, the 12MEF pictured in the other thread has round flashers. Was this a custom option that was made for the NYPD, or were round flashers available on a TwinSonic model? Also, what does the M stand for in the 12MEF? I know the E was the exonomy model and the F was for flashers, but I don't know what the M was for. Thank you for any information you can provide.