User blog comment:Dragonfly18/Battlefield 3 Donya Fortress gameplay/@comment-4789675-20120426225845/@comment-137.30.248.76-20120427175301

Ok really, it's called an M1911 S-TAC, not M1911 SA. It says S-TAC on the Battlelog page and in the M1911 page in the Battlefield Wiki. Point being, learn what an existing weapon is called, such as this M1911 variant for example.