Pretty interesting information
US Firearms Industry Report
The link to the attached industry report highlighting current production of all domestic manufacturers, by the aggregate and a breakdown of the various types of firearms.
It not only does that but allows you to see the importation of firearms from other countries showing origin and numbers of imports.
Definitely a good source of knowledge and some interesting surprises but also some verification of things you probably thought already, like how far ahead Ruger is from anyone else in the production.
I hope you enjoy.