Browning BDM 9mm pistol. The round thing on the slide is the "Dual Mode" switch, which can be rotated between "Pistol" and "Revolver" modes. In the former, the gun operates like a conventional DA/SA auto, while in the latter the gun automatically decocks itself after each shot, but can be manually thumb-cocked for a single action shot, just like shooting a DA revolver. Early teething problems, unconventional controls, and (mostly) bad timing killed this slim Browning 9mm in the marketplace. The knife is a ceramic-bladed Boker Delta.