As you Asking for the Information About the Multi Caliber Individual Weapon System Small Arms of the Defence Research Development Organization the information is given below


Multi Caliber Individual Weapon System (MCIWS) is the new assault rifle developed by ARDE Pune of DRDO[2] and likely to be manufactured by OFT Trichy of OFB, India. It was first seen at the DEFEXPO 2014 exhibition

Specification

Weight 3.4 kg (7.5 lb) (empty)
4 kg (8.8 lb) (loaded with magazine)
Length 910 mm (36 in) (including butt)
Cartridge 5.56×45mm NATO
7.62×39mm
6.8mm Remington SPC
Action Gas-operated, Rotating Bolt
Rate of fire 600-650 rpm
Muzzle velocity 715–890 m/s (2,350–2,920 ft/s)


Design :

The assault rifle is configured to fire in 5.56 NATO, 7.62×39 and in 6.8 Remington SPC.[ Its design is influenced by both the AR-15 and the FN FNC.

The barrel assembly appears to be based on the AK-47.

The design would allow soldiers to configure it according to the needs of the missions by changing rifle barrels.