[quote=treblig1958You have to be very careful that the stamp is professionally applied also. [/quote]

Maybe I'm being picky but engrave it don't stamp it.
Stamping it carries the risk of distorting the area it's applied to, usually the under rib.
Many guns (at least British doubles which is what I'm used to) already carry the "maker's" name and street address in various locations.
Consequently it may only be necessary to add the "Made In XXXXX".

Jeremy