Nothing in this chapter shall be construed as applying to toy paper caps containing not more than twenty-five hundredths of a grain of explosive composition per cap, and to the manufacture, storage, sale, or use of signals necessary for the safe operation of railroads or other classes of public or private transportation, nor applying to the military or navy forces of the United States or of this state, or to peace officers, nor as prohibiting the sale or use of blank cartridges for ceremonial, or theatrical, or athletic events.
SDCL 34-37-7