(copied from the ASGI website)
Spring Guns
What are spring powered guns?
Generally referred to as “springers” they usually sport a lower powered spring and are manually operated, requiring one slide racking per shot; cheap and fun for plinking, but bad and generally useless in skirmishes. There are also spring powered rifles, they do not sport the same misconceptions of ‘springers’ they sport higher FPS ratings, and some use AEG springs. They are very accurate and generally fire long distances.