:agree: A lot of people get the two mixed up. I guess it's not that important to most, but whenever I refer to American "rifled-muskets", I generally mean M1816 (and variants), M1835 and M1842 smoothbores that have been rifled. Of course the '16 and '35 Models were also altered to percussion, except for a handful of '35's that were left as flintlock but rifled. Our M1855 RM was the first officially adopted "rifle-musket" in this country. Many people still refer to all rifle-muskets simply as "rifles", forgetting that they are musket length and that rifles are a different class of arm.