I Dont Have The CQB Helmet.... Why?

I have a career milestone of like 43, Ive been through the campaign on Legendary, solo. IDK WHAT TO DO. lol. Help? 343, set me up? Ive had problems in halo 3 where i lost katana, hayabusa, and many other sets of armor. It annoys me that this kinda stuff happens…

You have to go to waypoint on your console. Should unlock then.

If going to waypoint on your console doesn’t work, try replaying the last level on legendary again. It’s a pain to do but that may be the only way to unlock it. As far as losing unlocks on Halo 3 I had that same problem but I believe I redid the requirements that unlocked them again and didn’t have any problems after that.

Check this video out for help.