This is a model i made a year ago and which i used to bake the textures on my gameready M4A1 model you can buy here: https://skfb.ly/o67MH
I had to remove the Subdivisions of this mesh because of the max. allowed filesize on sketchfab, so it might look off on some edges. If you wanna see this model uncompressed and subdivided, check out some renders on my artstation: https://www.artstation.com/artwork/68De26
I will not provide you a download link to this model due to legaly reasons.