What are the top 10 American firearms manufacturers?

There's no way to place manufacturers in a list, but here are ten prominent American firearms manufacturers in no particular order:

1. Colts Mfg Corp

2. Mossberg

3. Remington

4. Smith and Wesson

5. Springfield Armory (note the newer polymer XD series is made in Croatia)

6. Sturm, Ruger Co.

7. Hi-Standard

8. Winchester Repeating Arms

9. Henry Arms

10. Bushmaster