I have a Maadi receiver cover that the original owner painted a weird color and I was thinking about stripping it and repainting to match the rest of the gun. I know Egypt was famous for their cheap finish, what is the best way to duplicate that?
I'd say a can of flat black from krylon and a handful of sand.

mine was more like semi gloss or satin. definitely not flat.
Sears Latex and an old broom.
Seriously, some enamel would probably work fine and I wouldn't worry about style points.
I had a spare receiver cover from and old parts kits that was rusted so I decided to hit it with some spray paint and I actually got it to look pretty close to the original Maadi finish, now the question is do I spray paint the receiver cover?