Anachronisms: The M-16 rifles used by the grunts in this film are closed flash suppressor models. Most M-16s in late 1967-early 1968 (the Tet Offensive that is portrayed at the climax of "Platoon" was launched by North Vietnam and the Viet Cong in Janury 1968) had a three-pronged flash-suppressor; this was replaced by a closed flash suppressor as the open prongs tended to get caught in vines. The closed flash suppressor model was introduced in 1967, but since the armed services require a soldier to keep the arm that is issued to them, the veterans likely would have the older model.
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