Tell me about this .38 long cartridge revolver

I came across this .38 long cartridge revolver when cleaning out my father in law's garage. He didn't know a lot about it, other than it came from his grandpa, and he's never shot it, himself.



I did some research but couldn't find a lot about it online. The manufacturer is GAC Firearms MFG. Co



Does anyone have any familiarity on this piece?



Thanks in advance,



Aaron

Tell me about this .38 long cartridge revolver