Please note: you need to download GTA V Weapon Data which made by fkngoob due to ancient data corrupt my gameplay
Also after replace weapon.dat, you need to replace default.ide to avoid game crash due to game cannot understand what animation supposed to that weapon.

Copy and paste this lines in weapon.dat made by fkngoob:
$ DESERT_EAGLE INSTANT_HIT 900 900 348 -1 2 pythonbad 15 70 0.41 0.03 0.12 0 0 3.0 1.5 6 17 7 6 17 7 40 7001
$ DESERT_EAGLE INSTANT_HIT 900 900 348 -1 2 python 15 70 0.41 0.03 0.12 1 200 3.0 1.5 6 17 7 6 17 7 40 7011
$ DESERT_EAGLE INSTANT_HIT 900 900 348 -1 2 python 15 70 0.41 0.03 0.12 2 999 3.0 1.5 6 17 7 6 17 7 40 7031