Step one Download this mod and install:
https://de.gta5-mods.com/weapons/l85a2

Step two download my new skin :)

Whats new?
New the gun have colore like the original and is no more only black and white.

Install:
Grand Theft Auto V\mods\update\x64\dlcpacks\patchday10ng\dlc.rpf\x64\models\cdimages\weapons.rpf\