SteamPunk guns aren’t just something to hang over your mantle for decoration. The weapon pictured above is a fully functional Nerf gun created by Etsy seller faustus70. Alas, it is already sold, but there is really nothing stopping you from making your own customized SteamPunk gear out of some beloved item and stuff you have lying around the garage. Faustus70 made his gun out of planks from an old chair and hand cut aluminum strapping. A bit of sanding, painting, and artificial weathering, and a masterpiece is born.
My only criticism of the piece is that I think rivets would normally be centered on the planks, rather than between them. It’s important to get these things right, because hokey religions and ancient weapons are no match for a good blaster at your side.
This one may be gone, but last I checked, he still makes such things and sells them at quite a reasonable price at his Etsy store here.