Pakistan Defence

As our adversary is buying that Multi billion S-400 which is no doubt the best out there, but not cost effective and without TOT,

So here's a solution which can be implemented indigenously

A rail gun is basically a large electric circuit, made up of three parts: a power source, a pair of parallel rails and a moving armature.
But amazingly without any fuel or gunpowder it can fire a projectile with the speed of Mach 7 for upto 100 miles.
Enough to defend military bases and also for border security. Same gun can be used in Corvette class ships.
I am positive that we are working on even better solution than this.