How did Machine Gun Kelly get his nickname?

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Tags

1. #tennessee
2. #barnes
3. #during
4. #better
5. #memphis
6. #prohibition
7. #kelly
8. #george
9. #favorite
10. #known
11. #american
12. #thompson
13. #nickname
14. #weapon
15. #submachine
16. #gangster
17. #machine