Why is it called BB gun?

Related questions

1. Why do bullets kill?
2. Can I bring an air horn on a plane?
3. Is a falling bullet deadly?
4. What happens if a bullet is not removed?
5. Who invented the BB gun?
6. What are BB gun bullets made of?
7. Who was the first BB gun made for?
8. What was Ralphie's BB gun?
9. Would a penny dropped from the Empire State Building kill you?
10. What's the name of the BB gun in A Christmas Story?

Tags

1. #these
2. #round
3. #their
4. #originated
5. #continued
6. #steel
7. #shotgun
8. #called
9. #projectiles
10. #nomenclature
11. #calling
12. #shots
13. #users
14. #established
15. #already