TC9 1873 SA NICKEL FLATTOP BIRDSHEAD IVORY 3.5" BARREL 9MM. The 1873 Single Action Flattop Birdshead Ivory model is the perfect "barbeque gun" to show off. It combines the performance of a full size revolver with a compact barrel length. This model features a steel new model frame, classic nickel plated finish, and a one-piece polymer ivory flattop birdshead grip.