Chinese Communist Hand Grenades Displayed is a cache of communist grenades, mostly Chinese Type 67s, captured by a U.S. Marine after an ambush in Cam Hieu village, Quang Tri province, in northern South Vietnam on Dec. 4, 1967. Although deadly within a 6-foot radius, Chicom—short for Chinese communist—grenades suffered from a high percentage of duds. (Ed Palm Photo/Getty Images) Ed Palm Photo/Getty Images