REALLY NICE tank though.
Well its gun barrel is equipped to fire a lase guided missile(along with conventional rounds) known as the LAHAT ,which has a range of round bout 7kms &is designed to hit tanks&low flying helos.
If rumours are correct,India has signed a deal with IAI to buy the LAHAT,along with electronic warfare systems for its indegnious ARJUN MBT(Its new Russian T-90s come with shorter range missiles).Moreover ive also read reports that Germany is interested in integrating the LAHAT to its LEOPARD2 tanks ,esp those being promoted for export.
The Merkavas are probably the only tanks ever to be armed with 120mm sabot rounds,machine guns,60mm mortar&now this missile!!