CSME Multi Launch Rockets

[Sean]

edit-
I just had another look at the wikipedia pages for these 3 weapons,(this is when they entered service)
BM-14 ,1952 date.
BM-24,1947 date.
BM-21,1963 date.
My reading of the Egypt OOB gives(this is their operating start year in EGYPT)
BM-14 ,1961 date.
BM-24,1961 date.
BM-21,1952 date.