Benelli M4 Standard Stock

Hi. Could anyone modify this beautiful Benelli M4 from CS:GO

https://s33.postimg.org/9vz9pim57/Immagine.jpg

and model a standard stock like this?

https://s33.postimg.org/mndfvvygb/Benelli_M4_Stock_Removal_Advisory.jpg

This is the most beautiful version of this rifle, but unfortunately there are no 3D models available.

https://s33.postimg.org/9khtcgvbv/foto-m4-12.png

Here the OBJ file. Thanks anyway.

How about the M4 from The Division