I'm afraid the TV show Firefly seem to pass by unnoticed by me for some reason, though I do have a copy of "Serenity" on DVD. I recently got the chance to see a replica of Mal's pistol, owned by a fellow steampunk, It was a slightly "steampunk" version with a copper barrel. Anyway having seen it close up as night follows day it was a certainty I'd make one eventually. Turned out to bee sooner rather than later. I get these obsessions.
So with a few photo's gathered from the internet and some measurements plus my usual assortment of materials, MDF, hardwood scraps, bit's of old Biros and clock parts I made my very own Captain Malcolm Reynolds gun.
If you haven't seen Firefly you can get it on Amazon.