Don't know about the M-2s/M-3s, most of the M-113s/M-577s had been sent to storage depots awaiting destruction or were pushed way down the Guard chain to units that were at a very - very low state of readiness for mobilization/deployment with a few exceptions. Now the M-113s/M-577s are being upgraded and sent to the sandbox as well as a Swedish variant that is well armored is being look at from an article I read, oh at least two months back on www.army.mil.