Welcome! This tool will provide you all CS:GO weapon models that you can apply your skin too, then customize the scene, like lightning, background, maybe in future I'll put first person view with same customizable options as the default build have. I don't want to spoil a lot but I'll just keep you with updates!
Early stage!
You can apply a selected texture that you created on a gun by copy/paste your link in to the window, then it will automatically download the texture from the website and apply it on the model it-self.