GG&G makes a dove tail flip front, but it's not called the "MAD". If you are going to get it, wait a little while for them to make it with a locking detent like they did the rear A2 flip. It's one of the better quality front flips though, fairly compact.
die-tryin, here's a few shots of the GG&G flip front and the GG&GA2 flip rear:
(I'm thinking maybe I should turn the flip front around so it points to the rear)
[img]http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=13416[/img]
[img]http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=13417[/img]
[img]http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=13418[/img]
And one of the KAC 600 rear and KAC Flip Front Rail Mount
[img]http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=14088[/img]