more than genruls it was politicians who ruined things back in 50s, remember how Gen Chaudhry wanted to induct self-loading rifles (FN49, FAL and dem early AR-10,AR-15 were presented to him etc) but renowend then raksha mantri denied it all citing "we don't want NATO weapon here..."
later FAL made through but Belgians did gendmasti and we revenged by kaapying british SLR sending them towards giga seethe, and then ICJ case happened and Nehru saved the day by persuading Belgians by providing them with compensation in way of buying MAG 58 MMGs off-the-self (which later we also got license ToT etc in long run) and all...
but at the end of day '62 war was fought with WW1 era .303 SMLEs and some FALs at some places and we later went ahead with 7.62 NATO Lee-Enfield derivative till 1967 at least when finally full scale production+adoption of local 1A SLR started