yeah i think improving excalibur with adjustable butt, ambidextrous controls,picatinny rails etc. Excalibur rifles fired 24,000 rounds with only 2 stoppages it perform well better than foreign rifles. Lets give excalibur to indian army infantry and mciws to special forces because one cannot give entire army with multicalibur rifles. Besides excalibur cost 60,000 rs i do know cost of mciws. While it is possible to give mciws chambered .5.45 nato round to normal soldiers and give 7.62 soviet rounds to para commandos, rr, sff, ghatak commandos etc.