Half-Life-PBR/bshift/pbr/models/w_shotgun.mdl/w_shotgun.mat

{
"for" "#models/w_shotgun/shotgun_side.mdl"
//"basecolor_map" "shotgun_side.png"
//"normal_map" "shotgun_side_normal.png"
//"metal_map" "shotgun_side_metal.png"
//"roughness_map" "shotgun_side_roughness.png"
}