Don't forget the Mini 14 as well.
If Ruger isn't the leading US manufacturer by dollar volume then they are second. They are also the only US company that sells to all four categories: rifles, shotguns, pistols and revolvers.
From their 3rd Quarter 09 10Q:
Chief Executive Officer Michael O. Fifer made the following comments related to the third quarter of 2009:
• Demand for Ruger firearms remained strong as the estimated sell-through of our products from distributors to retail in the third quarter of 2009 was 214,500 units, compared with estimated sell through of 143,100 units in the third quarter of 2008.
• This year-over-year increase in demand of approximately 50% substantially exceeded the 11% growth in the National Instant Check System (NICS) background checks over the same period, suggesting the likelihood of some market share gain by the Company and some increase in inventory at the retailers. Comparisons of NICS checks from period to period are often used as a proxy for consumer demand for firearms.
I seriously doubt they would endeavor to work this hard if they really hated guns.