SOF Week 2023 – Tampa, Fla. Ahead of Special Operations Foundation Week (SOF Week) SIG SAUER announced the first-ever public offering of a pair of M17 and M18 military surplus handguns with matching serial numbers through an online auction to benefit Sterling Promise Foundation. All proceeds from this online auction, hosted by Guns America, will go to support the mission of Sterling’s Promise Foundation to provide financial support for early cancer detection and to cover the financial gaps that occur between treatment needed and benefits provided of special operations veterans.