Pheas Airsoft shows how to deactivate a KWA airsoft gun with the recoil function without ruining it... "Many thanks to the guys at Airsoft Custom Parts (link below) for sending me this recoil delete that they have come up with!
This allows you to keep the over all look of your recoil KWA, but remove the recoil element and lighten it up as the recoil delete is so light compared to the recoil weight itself.