Overview
RPK-16 is an MG that attempts to overcome one of the main problems with MGs, having to reload. Ultimately, her performance is not up to the task.
Her Skill is split into an Active and Passive, where her Passive allows her to continue shooting after running out of Ammo with increased Accuracy and massively reduced RoF. Her Active makes her reload for 1 second, and then gives herself a minor DMG buff while losing her Acc buff for her entire volley before she runs out of Ammo again.
The problem here is that her reloading has an 18 seconds cooldown and her DPS while out of Ammo is terrible due to the massive RoF penalty.
Don't attempt to use her with ARs. She's a mediocre MG and should only be used if you need her Armor tiles and for no other purpose.