More Ammo & More Range
Just copy to GTA IV root folder "Steam\steamapps\common\Grand Theft Auto IV\GTAIV"

All ballistic weapons have 5000 bullets capacity
RPG have 100 rockets capacity
Granade/Molotov: 100

All weapons have long range, you can shoot anyone in the render distance, except for shotguns because they spread too much
RPG and Throwables have original range

Works on GTA IV, TBoGT, TLAD