Why did Master Chief's armor change?

Related questions

1. Is Master Chief the last Spartan?
2. How old are the Spartans in Forward Unto Dawn?
3. Why was Xerxes murdered?
4. Does the Master Chief Die in Halo 5?
5. Did Spartans throw babies off cliffs?
6. How much does a Navy SEAL chief make?
7. Is Master Chief Human?
8. Is Xerxes from 300 in the Bible?
9. How old is Master Chief?
10. Who killed all the Spartans?

Tags

1. #change
2. #though
3. #because
4. #cryosleep
5. #chiefs
6. #chief
7. #wanted
8. #while
9. #direction
10. #special
11. #cortana
12. #reason
13. #upgrading
14. #variant
15. #could
16. #first
17. #different
18. #armor
19. #master