I have a 2013 model, trying to figure out when the first MK-25’s were sold in the U.S. thanks!

I can’t seem to find anything online regarding the release date…

I thought I got mine in 2011, but I'm not 100% sure.

P226 Navy
U.S. Navy SEAL teams started using the SIG P226 in the 1980s, after German Kampfschwimmer tested them successfully.

The first Naval Special Warfare inspired P226 pistols to be offered to the public were the NSW Commemoratives, issued in early 2004. The SIG P226-9-NAVY is a version of the SIG P226 that is produced that features a stainless steel slide engraved with an anchor to designate them as Naval Special Warfare pistols. SIGARMS raised $100,000 for the Special Operations Warrior Foundation through the sale of these NSW serialized pistols. The pistol bearing serial number NSW0001 was sold during a live auction on the nationally syndicated Laura Ingraham radio show for an additional $25,000. Later produced commercial versions added a universal rail for accessory attachments while retaining the anchor of previous models, but do not have the SIGLITE Night Sights.

P226 MK25
Released in 2011, the MK25 has been advertised by SIG as being identical to firearm carried by the U.S. Navy SEALs. Features that help identify it amongst other P226 variants include the silver anchor and UID identification label on the left side of the pistol, as well as a mil-spec picatinny rail. Although cosmetically similar to the Navy model, the MK25 features an anti-corrosion coating applied to all external and internal surfaces, as well as SIGLITE Night Sights.