GMG grenades dont seem to have framgmentation simulation or it is just too weak, as the grenade has to land right on top of the enemy to kill him.
- Legacy ID
Put any AI, get in a car with the GMG. Fire at them and try hitting the grenades in the ground at different distances from them.
Wikipedia says this about the 40mm Mk19 grenades (the GMG ones should be very similar):
"Upon impact, the grenade can kill anyone within the radius of five meters, and wound them within the radius of 15 meters."
That is the same lethal and wounding radius as the thrown M67. Those values should be used for the grenades in the game as well.
I've noticed this as well. Unless the grenade lands on their toes it has no effect. Fragmentation or a larger splash damage would be great. This may just be due to the Alpha though but still worth mentioning.