Halo 3: How did i get security armour + Katana?

[Bobathan156]

I have never played online, havent done all achievments, although i have both these uber sets? how?

 

[mike k]

Thats crazy, maybe you just got lucky. im so jealous

 

[The_Exorcist]

Must be a glitch in the system or something.
To get them you need 49 of the 79 acheivments, and a certain amount of gamerscore just from halo 3 (think it was 1000).

So if you have neither of those then it must be a glitch. I'd say they would disappear soon if it is a glitch.