This is a concept for an almost entirely reusable Falcon 9. Both stages can be reused, along with the interstage; the payload attachment mechanism is jettisoned and lost along with both fairings.
The first stage is identical to the current F9R-v1.1 first stage.
The second stage reenters the atmosphere upside-down, with the top side of the stage entering first. The top side has a heatshield, which protects the body. It lands upside-down with eight SuperDraco engines in a configuration similar to the Dragon v2.
Modeled by me with input from /u/Blue525 and others.
CC0.
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