SDH is correct; most of the Impressionists were masters of many styles, including almost photographic realism. They chose not to paint, engrave, sculpt, etc. that way, for various reasons--personal, political, and, of course, economic. Picasso had many styles in his long career and was very much influenced by such art as the cave paintings in Spain and France.

Not sure Impressionism is a good approach for gun ornamentation, for SO many reasons.