How to Remove Fill Valve O-Ring from KWA MP7 Magazine Sept 7, 2013 11:59:43 GMT -5 Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Phantom Reaper on Sept 7, 2013 11:59:43 GMT -5 Title Says it all, I got my O ring pack today and I need to know how to remove the old O ring already in the mag. Still a noob when it comes to gas guns.