Cut off M1 Carbine? -- Yum! M-14's

[CINDERS]

Those chaps RCS look like MACSOG which explains their firepower requirements, however I did also see that they went out with VC weapons as well to confuse them (the VC) into thinking they were in a blue on blue contact!
My brother inlaw a VN vet who passed away in 2022 said you never forget the sound of an AK being wracked or the sound of them firing.
Pic of him in the back of a truck whilst as he said on his "Asian Holiday".