The concept “Damage” can be attached to the Damage per Bullet or the Damage per Second. So in PUBG mobile, the Semi Machine Gun SMG with the highest Damage per Bullet is the Tommy gun with damage up to 40. While the other SMGs are with damage of Vector 31, UZI 26, UMP45 39. If we consider the Damage per Second we have to put in mind the bullet speed and time between shooting. The Tommy gun has the lowest bullet speed with only 280m/s, Vector has a bullet speed of 300 m/s, Micro UZI speed goes up to 350 m/s, and finally, the fastest SMG is, of course, the UMP45 with 400 m/s. now considering the time between shooting, the UMP45 is the longest between the SMGs and so doing the math our champion is the Vector.