server.cfg | Lag Compensation mode

[Dan]

Luna is right, there is no recoil system in game as no information of bullet mass, weapon mass and velocity value is given in game by devs.. thus related towards no actual recoil formula integrated in GTA SA
but there is working Weapon Spread in game which is indirectly relating to Recoil, however recoil is not simulated. guess what if a weapon has no recoil value in real life then the weapon spread should be near to nil disregarding external factors, meaning no trajectory diversions. only thing that would affect bullet trajectory would be bullet velocity which is also not simulated in main game.  
Hence it could be concluded that spread in the game is actually due to recoil value but there is no simulation of recoil in game.