INSAS Standard Rifle - It is a gas operated assault rifle. It can be fired in single round or three-round burst mode. A new model with black furniture incorporating full-auto mode is also being introduced. A telescopic sight or a passive night sight can be mounted on it. It can take NATO standard 5.56 × 45 mm SS109 and M193 ammunition. It comes with a bayonet. It has a mount point for the ARDE 40 mm Under Barrel Grenade Launcher, along with a gas-block for launching grenades and grenade iron-sights. The flash suppressor has a blank-firing adaptor. It also has a foldable butt version. Current generation rifles being made are outfitted with black plastic furniture with some improvements in its construction.
Kalantak and Excalibur - Both are lighter versions of the INSAS, designed for close quarter combat. They both have foldable butts and picatinny rails to mount standard sights or opto-electronic instruments.
LMG - The LMG differs from the AR in possessing a longer and heavier barrel with revised rifling, and a bipod. The LMG version uses 30 round magazines and can also accept the 20 round INSAS AR magazine. This model fires in semi and full-auto. Current generation LMGs being made are outfitted with black plastic furniture with some improvements in its construction. It also has a foldable-butt version.
Maybe it's the LMG? It was the latest one in the series!