That’s an intersting AK variant they have. It appears to be a Valmet in 5.56 Nato or 5.45 x 39 based on the curvature of the magazine.
Its called INSAS. Its standard Indian Army issue.
One of the INSAS variants can pierce bullet proof jackets.
http://www.thaindian.com/newsportal/business/new-sub-machinegun-can-pierce-bullet-proof-jackets-drdo_100321580.html