I believe the Sig P226 MK25 is the old P226 Navy, given it's name because of the extra coating making it more suitable for salt water enviorments.... just like the P226 Tacops used to be known as the P226 Blackwater Edition. The Anchor symbol is a Sig thing (distinguishing the Navy edition from others) and may have nothing to do with Seals using the P226... although I bet that it sold a boat load of Sig's to Seal Fanboys and Wanabee Operators... marketed as the exact same gun Seals use.
Don't get me wrong, Sig makes excellent handguns and I own 3... I'm just saying there is some marketing hype used to sell some models of guns.
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