Where to find an authentic McCree revolver prop for convention

I am working on my wild west gunslinger outfit for comic con this fall. The vest and hat are ready, but crafting the Peacekeeper revolver myself is turning out way harder than I thought. My budget 3D printer left rough layer lines that took hours of sanding, and the cylinder mechanism broke during assembly. I really need a finished, convention-safe piece with sharp details and proper paint shading. Has anyone ordered a ready-made revolver recently? How long did shipping take for your finished prop?