India successfully test-fires Akash missile

[Krate M]

What's the difference between the two apart from carrier? Both are designed to bring down planes and cruise missiles.

The customers

But yeah you are right. Actually the army version was ready first, but the carrier was changed to t72 from bmp after that and then restart of testing process. Funny that the story is similar for Nag.
IAF under FH Major accepted a lot of good Indian produced equipment. Akash was one of them. And look at the amount of money in the order.