When in close range, The PUBG mobile Groza is really devastating with its damage per bullet of 49 and high fire rate. But since it has high recoil the aiming could be really difficult if not controlled probably. Now the Mk14 is super deadly with its auto-fire mode and the 61 for damage per bullet. It can kill an enemy with only 3-4 shots in close combat and its recoil is considerably better. So the upper hand in this matter goes to the MK14.