Originally Posted by WoodenPlank
Shotguns and ARs are completely different concepts.
Ruger makes all kinds of quality firearm and all of them go bang each and every time you pull the trigger. S&W does as well. Seems to me Colt (who many consider to be the standard in production ARs) make a few 1911s and SA revolvers as well.
I don't think a company has to focus on one type of firearm to be successful at producing them.
The AR (much like the 1911) is produced by many companies, and the vast majority of the companies that produce them do so well. As I said I have never seen a Mossy AR but they are not a company known for making poor firearms so I would assume that stands true for their ARs.