With the computer etching machines out there I should think that 'somebody' would be willing to jig up your action and the cost should be well below hand engraving (remember, engravers are 'artists' and may have that temperment). You should be able to find some patterns you like in the etching selections pre-programed; not quite as original, but you are not likely to see another one so done on the range!
Before having it done you may need to de-blue and polish (by hand, not on a wheel!) and afterward reblue or case color and/or gold-fill the lines.