With Which country, Indian Government signed a deal under Fast Track Procurement (FTP) to avail the Indian Army with 72,400 new 'Sig Sauer Assault Rifles'?

The Indian Government has signed a deal with the US under Fast Track Procurement (FTP) to avail the Indian Army with 72,400 new 'Sig Sauer Assault Rifles' which will overhaul the army's inventory of frontline rifles. These Sig Sauer Assault rifles are 7.62*51 mm which are compact, robust, advance in technology and easy to maintain in field conditions. These new rifles will come at a cost of around Rs. 700 Crore and will be used by the army troops deployed along the 3,600 km China's border.