Credits:
New World Interactive - Model and texture assets.
Equinox407 - Compiling/Decompiling, texture/mesh editing, rigging, animating.

DO NOT REPOST ANYWHERE WITHOUT MY PERMISSION

Description:
The M4 carbine is a 5.56×45mm NATO, gas-operated, magazine-fed, carbine developed in the United States during the 1980s. It is a shortened version of the M16A2 assault rifle.

Replaces the M4.

Features:
Fully animated
Working collision data
2K Textures

Please note:
No issues.

Installation:

Just extract the archive and place the files in

GTAIV\pc\models\cdimages\weapons.img