What it is:
Basically, it is the same glitch from Halo 3 where you would have a over-shield or invisibility in your inventory, except now it is shown on the outside and can be done with custom power-ups.
How to do it:
1) You cannot be connection host
2) Pick up an armor ability (such as Jet-Pack)
3) Crouch and walk up to the desired power-up and hold your weapon pickup button (RB for Recon)
4) It should drop your armor ability on the ground and the bottom of your screen should look like it is on fire when you look down. (picture below)
Some other things:
- If you do the armor lock glitch then do this glitch with camo, from some angles your torso will be invisible
- When people shoot your power-up while wearing it, it hurts you and can kill you
- When you get on a mongoose, the power-up moves to your head, so it looks like you have an afro
- Sometimes it will be around your feet instead
- If you do the armor lock glitch, then this glitch, then run over an active camo, you'll be invisible except your feet and head. If you crouch, you're completely invisible.
- Apparently, it has a large failure rate and takes many tries in some cases...
Heres a pic of the three colors (with armor lock glitch on):