When I had Metroplex as a kid, I never even knew Six-Gun was a part of the set.
But the Reprolabel upgrade set, X-5 takes the somewhat colorless mass and gives him some actual features!
Such as eyes! Not to mention hands, or sticker hands at least.
Excellent placement of Autobot sigils on the shoulders and chest.
All together, these two sets add a ton of much needed variety and detail to the three smaller bots.
Again, it seems unnecessary that they sell these separately, especially seems you really need to get all three…they’re really just awesome.
Next up, the big guy himself!
Stay tuned!
Pax Cybertron 
Looking good!