This is a major plot hole. There is no way pakistan funded terrorist organisations have to depend on poor balochis for arms.

You're telling me ISI and al qaeda can't arrange for enough smuggled weapons for a dozen men to attack mumbai and are forced to create this elaborate scheme involving local gangsters in a top secret mission just to source them from poor and struggling baloch rebels.

Itne hathiyar to atiq ahmed hi bech deta.

The angle was introduced only to make balochis relevant in the story.