Anvil shows you the feature which has become a standard on many AEGs these days, a Quick Spring Change System and Arthurian Airsoft his this feature too. Watch how it is done in this episode of Airsoft Action TV... "Here's a quick run through of the Arthurian Airsoft E&C quick change spring system. I ended up editing this section out of the video I released recently on the Mordred so have just quickly knocked this up for you all."