Ross Hassig reports that the Aztecs, before the arrival of the Spanish, had slings and a weapon he calls a "sword" (hadzab) which was made of chulul wood.
Ross Hassig, War and Society in Ancient Mesoamerica (Berkley: University of California Press, 1992), 256-57n.139
Slings were called yuumtun in Maya. Colección de . . . ultramar 1885-1932, 11:41, 80, 256; Follett 1932:380; Roys 1943:66; 1965:671. The sword (or hadzab in Maya) used at Motul, Yucatan is described as being of chulul wood and five palmas (1 palma = .20897 metres) long and three dedos wide (Colleción de . . . ultramar 1885-1932, 11:80-81). Collección de . . . ultramar 1885-1932, 13:208; Follett 1932:380, 385-86; Landa 1959:52; Roys 1943:66; 1965:671; Villagutierre Soto-Mayor 1983:54, 68. 1 dedo = .0174 meters; measure equivalents taken from Barnes, Naylor, and Polzer (1981:70-71).