Complex sentence: The RPK-16 5.45 × 39mm light machine gun/squad automatic weapon is a modernization of the RPK-74 and is expected to take over its role in the Russian Armed Forces.
Split into simpler sentences: The RPK-16 5.45 × 39mm squad automatic weapon is a further modernization of the RPK-74. It is expected to take over the role of the RPK-74 in the Russian Armed Forces.