Where would a fellow get a side-plate screw for a battered Rossi police trade revolver??

Eh...Nevermind...I got to digging in my assortment of left-over gun parts...and much to my shock!...found screw with matching diameter and thread pitch. Just a bit of minor machine-work on the screw head and shortened...made myself a suitable replacement..

I think my 'new' little Rossi ex-service revolver is going to be ok...wish I had a good camera...the Rossi is pretty cool in it's own brown/worn weather-beaten sort of way