August 24, 2012: The U.S. Marine Corps has ordered 12,000 .45 (11.4mm) caliber pistols (for $1,900 each), mainly for use by its SOCOM (Special Operations Command) and recon troops. These MARSOC (Marine Special Operations Command) troops have, like the army, navy, and air force components of SOCOM, quietly replaced most of their 9mm pistols with .45s. For the last few years the marines have been supplying their special operations troops with older M1911 model .45s, refurbished (or built from scrounged up parts) in a marine-run facility.
http://www.strategypage.com/htmw/htweap/articles/20120824.aspx