The Asiimov skin for the AWP sniper rifle in Counter-Strike: Global Offensive can be a pricey one, $30 or a lot more if you're not lucky. So buying one might not be the best idea. But modifying a generic paintball marker to match the one in CS:GO? That's much better.
Gaboer did just that and the result is really impressive. He should be rewarded with an AWP in-game for this. And it's not just a simple repaint either. The original marker looks like this:
So it must have been a long way to the finished product.