Have seen a fair amount of rare guns in Manipur during mid-90s to early 2000s. I still remember seeing INSAS for the first time around 96-97 while going through Nagaland on the way to Shillong, it was very different from the rest of the regular weapons. The first time I saw AK in close-up was in 97 when I went to Aunt Farm for a picnic there were four Army personnel posted there, at first the adults were reluctant for us to talk to them however, we being kids end up playing with their Aks, I think it was Romanian one as the handguard were orange. That is also the first time I saw an AK round has some greenish-black casing for the brand-new round. Then down the line saw many time of gun in service with state police, one time saw Burmese MA series rifles. But M16 and one with M203 were spotted often. Also the FN FAL with bipods. After few years later got my chance to fire INSAS and Sterling, sterling I shot very badly that I broke the target bamboo pole but INSAS at 200 meter the instructor said I did very very good.
Never seen AR-18 here maybe it is there and I might have not noticed it, but back it was pretty must wild wild east.