Finally i can start a thread here.
Just wanted to share my ASM 2012 Webshooters replica,
It lights up (red) by a trigger and a small switch on the back, also has a sound fx.
Be sure to check out vids below:
1) Amazing Spider-Man Web Shooters Self Made Replica (Light+Sound FX) - YouTube
2) Updated: Amazing Spider-Man Web Shooters Update: Web Shooter #2 is done! - YouTube
And here are some pics:
Was lucky enough to show them to Marc Webb,
got a pretty positive twitter response