Have you wondered yourself why in GTA: San Andreas and other GTA's all of the pedestrians use only one hand to walk, run and sprint with heavy weapons like AK-47 ?
Well with this mod CJ can stand, walk and run with heavy weapons like Shotguns, Assault Rifles, and heavy weapons in one hand !
However CJ cannot sprint with those heavy weapons ! Maybe I'll try this in the future !
Special thanks to 4sinayousefi for giving me necessary information on how to complete the mod !