This makes the weapons in GTA San Andreas realistic. With a realistic fire rate and realistic range and realistic damage.
But mind you this also makes the game extremely difficult. The difficulty spike MAY make some missions unplayable.
So I'd suggest you use this when you want a challenge.

The stats have been adjusted to match the following weapons
9mm------>Beretta m9 (firing stance changed)
silenced 9mm------>Colt 1911
Desert Eagle------>.44 Revolver
Shotgun------>Remington 870 (Recommended to use with the shotgun reload mod by thalilmythos-https://gtaforums.com/topic/904985-sa-shotgun-reload/)
sawn off------>sawed off double barrel shotgun (firing stance changed)
Combat Shotgun------>SPAS 12
Tec-9------>Tec-9
Micro Uzi------>MAC 10/Ingram 10 (firing stance changed)
SMG------>H&K MP5
AK 47------>AK pattern rifle
M4------>CAR-15
Sniper Rifle------>Remington 700
Rifle------>M1 Garand