Matching an engraving on receiver

I started looking for help on this in December. I tried What The Font, a message board that is related to the subject (firearms), a message board that has a fair number of graphic artists, and also the manufacturer. Just recently I was told about this forum so I figured I'd give it another go.

So I've got a gun part. It came already engraved as seen in the first attached picture "OrigEngraving", and I would like to add my own engraving in the same font. The engraving company I have contacted for the job said they can do any TTF font.