Apparently the reserves still use M1 carbines, M60's and finally, the grand old Cadillac of them all, Garands for target work and marksmanship training, now that shows a certain class to me...
On a wider note in the early 90's, they were certainly still using M113 APC's and UH1 Hueys, I remember seeing both in use around Tan Son Nhut.
I think a few Chinooks were still operational at that time, parked on the old military dispersal apron and appeared to still be airworthy.