Hey Billy,
Welcome over to the Armoroama site.
A ggod source for some basic informaiton is a place call
Federation of American Scientist. Within these logs, there are a wide source of informaiton.
As to your questions, I am not informed to enough of your post to answer you. Instead, I will give you two links to the
BMP-1 and the
BMP-2 . Both of thesee links are within the FAS web sites for your education and enjoyment.
Hope these help and if not, do not hesitate to ask some more questions.
Dave