Different Indian security forces responded to the attacks. The first agency on the scene was the Indian Police, which are normally armed with the SMLE .303 rifle. They are usually used for riot control and hence are not equipped with more modern weapons.
The Mumbai police - ATS - anti terror squad - has Ak-47's, Sterling 9mm SMG and probably MP5 as well.
Indian Paramils - use FN-FAL manufactured as the SLR, Ishapore
The Army - uses the INSAS Battle rifle, Dragunov
The NSG - HRT/CRT unit - uses the MP5, PSG-1
The Marine Commandos - Navy MARCOS - use the MP5, AK-47, PSG-1, INSAS et al.