Reference: Cassius' Pistol

Working on doing some references, for my animation project, right now. This little beauty is Cassius' gun, the Archangel P-9. It's his little demon-killing gun, firing a specialized 9 mm shot blessed with holy water. I based it off of a design for an old, Victorian era pistol I found (don't ask me the specific name of the pistol: I honestly have no idea...), and I rather like it. I don't know why, but I've always imagined Cassius to be kind of old school when it comes to demon killing, so what era to better emulate for his gun than an era with so many seances and stuff? I'm not sure if that engraving on the side is going to stay the same, but otherwise, this is it. 

I did this in ballpoint pen