BENGALURU, Feb 26 (Reuters) - Billionaire Gautam Adani's group plans to invest 30 billion rupees ($362.1 million) in manufacturing ammunition and missiles, the group's defence arm said on Monday, as it unveiled two sprawling production facilities in northern India.

($1 = 82.8480 Indian rupees) (Reporting by Chris Thomas in Bengaluru; Editing by Eileen Soreng)