Taken from an AK47 in Vietnam  1967
1 1/4" wide 54 1/2"long,  most of the stains are blood.
This material is the same as the web sling on the Chinese page
taken from a Chinese Mauser

This one was on a Type 50 Modified North Vietnamese SMG.
NVN or VC but don't know for sure.
13/16" wide X 50" long

Unusual buckle as the center bar is made to slide