It will NEVER make its way into the game, another guy wrote it aswell. http://blog.counter-strike.net/workshop/faq.php#weapons

Q) My item just got rejected. Why? A) Chances are that it didn't meet one, or several, or possibly all of the guidelines listed below:

Obscenity: We will automatically reject any obscene items. (Don't even bother.)
Copyright infringement: Even if you made the pattern yourself, if you used an existing likeness, it's copyright infringement. We can't and won't put other people's intellectual property in our game, for the simple reason that we don't own it. They do. We will automatically reject any items based on existing intellectual property.
National, political, or religious symbols: We won't play favorites. The only way to be fair is not to pick any.
Overall Tone: We may reject an item if we feel it deviates too far from the tone or fiction of CS:GO.
Technical limitations: We're currently only accepting maps and weapon finishes. Model changes, new weapons, and animations all sound fun and interesting but we aren't ready for them.
Color: Items that are fully black, fully white, or fully saturated light poorly in-game.
Gold: Gold weapons have a special meaning to the Counter-Strike community, and so we're reserving gold finishes for special events. We have a bunch of them backlogged already and we don't need more.
Promotional Designs: At this point, we're not looking for designs that promote existing brands or companies. Designs should not advertise a person, team, company, organization, etc.
Solid Color Style or Anodized Style: We likewise have a bunch of solid color and solid anodized paints backlogged. If you make one, chances are we already have a similar finish ready to ship. Your best chance at getting an item into the game is to demonstrate creativity with a great design.

3rd point.