not quite sure what you mean by snappy in the same way as a bob long, but for a really sortov springy return you want to try and turn the magnet return screw in as far as possible without passing the trigger stop screw. next take ur frame off and tighten up the spring return screw, again without tightening it so much that its a struggle to fire the gun easily.
hope this gives you a rough idea, if it doesnt seem right for you have a look at the trigger setup section of ur manual for a more in depth description of how to adjust it all