Here is how to get it:
1. Go to (W-w-w.gamecoach.tv/s4league).
2. Register on this page, make sure that you're still on the GameCoach site.
3. Install the game, if you havent done so already.
4. You will receiving a confirmation your rewards by e-mail (check your inbox/spam), they will be automaticly applied to your account.
6. Shoot away!
I can confirm that this is 100% LEGIT and working.
Also check this youtube vid, explaining the stuff you get and how:
The Shooting star is the perfect starting weapon as it is an extremely strong version of the Spark Rifle and a great way to build up early creds!
Enjoy!