This is from Reddit and captures a new SAO 9x19 pistol with an alloy frame, 10-round and 12-round magazines, and ambi thumb safety and slide stop. Supposed to have leaked early. It looks real as S&W filed a trademark application for a firearm "CSX" in August of this year.
https://www.reddit.com/r/guns/commen...ot_another_mp/
https://www.primerpeak.com/smith-and...m-smith-wesson