Full credit goes to Katka for the original mod on steam. I simply ported this mod to GTA V. This model is from Rising Storm 2: Vietnam, I take no credit for creating the model or textures.

DO NOT REPOST ANYWHERE WITHOUT MY PERMISSION

Replaces the Marksman Rifle.

Features:
Fully animated
Working collision data
2K textures
Correct shell ejection position

Please note:
No issues aside from minor clipping around the trigger.

Installation:

Just extract the archive and place the files in

mods/update/x64/dlcpacks/patchday8ng/dlc.rpf/x64/models/cdimages/weapons.rpf