Looks to me like a Blackletter font that's been bastardised. They've applied a thick outline with rounded corners to fatten it up, then manually adjusted elements on the M.
If I were a betting man, I'd say someone has made it so it can be trademarked, meaning it can't just use an existing font, the letters have to be altered in some way or created from scratch. But as my wife will happily attest to, I have been wrong before.