nerf gun easy reload

upgrade for maverick rev 6 nerv gun, apart from 3d printed parts 3 hex head bolts with nylocks will be needed, M6x35, M4x60, M8x40.
even my 3 year old can recock it.
https://www.youtube.com/watch?v=Agbeghd0yIw&feature=youtu.be
Added the original Freecad files in a zip file if any one wants to adapt them to their projects (check the files tab)