“U.S.M.C. SLAYMAKER”. Body Type: Cast 1 Piece. Body Material: Brass Body W/gray Metal Top. Body Size: 1 3/4″Wx15/8″H. Shackle Material: Brass. Shackle Size: 5/16″Dx7/8″H. Model No: ?. Key Type: Single Sided 5 Pins.