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.

First, you need to rename weapon.dat to .txt. Then copy and paste this lines:

Original 20rnd M193:
$ M4 INSTANT_HIT 900 900 356 -1 5 rifle 20 30 0.74 -0.04 0.13 0 0 0.45 1.3 6 8 6 6 8 6 99 7001
$ M4 INSTANT_HIT 900 900 356 -1 5 rifle 20 30 0.74 -0.04 0.13 1 200 0.65 1.3 6 8 6 6 8 6 99 7011
$ M4 INSTANT_HIT 900 900 356 -1 5 rifle 20 30 0.74 -0.04 0.13 2 999 0.80 1.3 6 8 6 6 8 6 99 7031

Alternate stats in 30rnd M855:
$ M4 INSTANT_HIT 900 900 356 -1 5 rifle 30 36 0.74 -0.04 0.13 0 0 0.45 1.3 7 9 7 7 9 7 99 7001
$ M4 INSTANT_HIT 900 900 356 -1 5 rifle 30 36 0.74 -0.04 0.13 1 200 0.65 1.3 7 9 7 7 9 7 99 7011
$ M4 INSTANT_HIT 900 900 356 -1 5 rifle 30 36 0.74 -0.04 0.13 2 999 0.80 1.3 7 9 7 7 9 7 99 7031

After that, you must rename .txt to .dat, which a thing that I forget mention to this flaw from previous mods.
I recommend use God Mode mods for CLEO from gtagarage, use for kill aggressive drivers from cheat with infinite ammo for more fun.
But don't play with this (I mean aggressive drivers from cheat) over 40 minutes, it cause a problems.