That's a little ambiguous, as that's a company not a model... I assume you are talking about the semi-automatic .50 BMG variants?
No. And I wouldnt want one. The .50 BMG is expensive and frankly, even match ammunition is inferior to dedicated sniper's ammunition designed as such from the start. The M2 is an impressive beast, but even the concept of an AM rifle is ridiculous.
What's your favorite rifle?