Burning characteristics and sensitivity characteristics of some stoichiometric ratio guanidinium 1,5'-bis-1H-tetrazolate (G15B)/metal oxide mixtures were examined. The linear burning rates of the G15B/CuO mixture were higher compared to other G15B/metal oxide mixtures and 5-amino-1H-tetrazole(5-ATZ)/Sr(NO(3))(2) mixture, although the average rate of pressure rise during the closed vessel test was lower compared to 5-ATZ/Sr(NO(3))(2) mixture. The temperature rise for both G15B/CuO and G15B/MnO(2) mixtures was considerably lower than that of 5-ATZ/Sr(NO(3))(2) mixture. G15B/Fe(2)O(3) mixture was the most insensitive among G15B/metal oxide mixtures during the drop hammer test, while G15B/CuO mixture was the second most insensitive. All G15B/metal oxide mixtures were insensitive against friction and electric spark discharge (ESD). Four seconds ignition temperature for G15B/CuO mixture was over 100 K lower than that of 5-ATZ/Sr(NO(3))(2) mixture, but the apparent activation energy for ignition was higher. Among the G15B/metal oxide mixtures studied. G15B/CuO mixture showed the fastest burning rate, while it showed a relatively low temperature rise and low sensitivity. G15B/ZnO did not burn at all.