How long will this skin last? Is it only through the Halloween season or will it last for as long as it is kept. I think it would be quite nice to have a limited edition m4 skin in general. I really like the feel of this gun with the skin on it as it feels like the default gun. Something about it just gives me more control. And I like the sound of it compared to the other skins. Just curious. Will this go away? Will it be limited, or able to purchase long after Halloween is over. Thank you for your time