Originally Posted by Archer

There are currently two Arjun FCS- one is with Sagem sights and LRF could be either French or Indian, integrated by BEL/DRDO with Indian electronics (Ballistic computer/ Grips etc)

The other one is an all Indian one, known as the IGMS (see www.bel-india.com for details). This has a DRDO day sight and complete local electronics, including LRF. The thermal imager is integrated in India, but with imported core modules from another country.

Original plans were for the first 15 Arjuns to get the first FCS, followed by the rest to get the Indian one. But its upto the Army- they can decide to standardize on either one. If the first, then its probable that India will license produce it.