Compared to the total number of arms issued from Richmond, Richmond marked arms are not that big of a percentage. Arms issued by the Richmond armory numbered in the 300,000 range but these were arms which were captured and repaired, turned in arms for repair and made by other manufactures. I don't have the numbers handy but you may find better numbers doing a goggle search.
No recent reproduction CW long arm is accurately produced. The Armi Sport is no exception but it is the only one being made. Some of the problems in addition to clunky stock, thick barrel and poor workmanship are the plated butt plate and nose cap. Most originals of that model used butt plates and nose caps made of a brass and copper mix. The plating will wear off of the Armi Sport parts and look pretty bad.