Primarily an upgrade in strength and printability from 0.6, this version splits the receiver into an upper and lower portion. The lower receiver has everything needed to push darts into a tube, and the upper receiver has everything you need to push darts into the magazine and keep them there.
Like 0.3 thru 0.5, this requires a nerf drum replacement spring from foamblastshop.com and a 12mm x 3mm neodymium magnetic disc.