I appreciate your concern for our RKBA,but please don't fall for the BS that lightly-armed peasants defeated a modern military in Vietnam.
Our modern military destroyed the Vietcong utterly before 1970 and pushed the well-armed modernly-equipped NVA back so effectively by late 1972 that they signed a peace treaty in January of 1973.
It was only after massive communist victories in the US congressional elections of 1974 that the communists were able to prevent the US Military from fulfilling our treaty obligations to the democratically-elected Republic of Vietnam, that Soviet tanks were able to roll down Highway 1 and take Saigon in April/May of 1975.
Peasant army?. No.
I'd only have added that the professional NVA was backed by CPLA and Soviet professional militaries and we still won in the field.