Is an m4 automatic?

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Tags

1. #automatic
2. #impingement
3. #firing
4. #m16a4
5. #carbine
6. #fully
7. #burst
8. #m16a3
9. #three
10. #modes
11. #operated
12. #direct
13. #round
14. #m16a2
15. #while
16. #m16a1
17. #cooled
18. #magazine