Thank you all for the feedbacks.
The following addon upgrade weapons, several changes will be made:
Rinse textures.
Renaming Mk18mod1 to OBR556.
Changing gun reload sound.
Increase the muzzle recoil.
We study the option of modifying or adding camouflage desert.
Will add a new weapon, the Barrett Mrad.
We are still in the process of modeling.
Thanks.