If this doesnt work for you watch the video made by: Andryvision09 Gta5/mods/update/圆4/dlcpacks/patchda圓ng( and Patchday8ng if you have updated gta)/dlc.rpf/圆4/models/cdimages/weapons.rpf If you know how to export the dds files from wtd archives then you can use any retexture off the gta 4 mods website thats for these weapons RPG>RPG (any rocket that fits the normal rpg will fit this)
A pack of converted gta 4 weapons most of the mags are not separated and there is no animations and the textures are kinda low as you'd expect from the gta 4 weapons but they still fit into V pretty well and they all work in first person but some hit under the ironsights.
