In Halo: CE (aka. Halo 1), look straight down. Your spartan will be looking straight forward with his weapon lowered.
In Halo 2, you must not be holding any grenades. Once you aren't holding any grenades, hold the button used to throw grenades (default LT). As long as you hold the button, your weapon will be lowered and you will no longer be able to use scopes on weapons.
In Halo 3, things are a little more complex. You must simultaneously press and hold the following buttons on your controller: LB, RB, up on the D-pad, A, and you must click and be holding the left thumbstick in. When you press these buttons, your spartan will jump. Once you land, your weapon should disappear from your screen and you should only see the crosshair from your weapon. If it didn't work, keep trying. Once your weapon is lowered, you can switch between the two weapons you're holding. If you shoot your weapon or melee, your spartan will raise the weapon again.
*No halo game allows you to lower your weapon This is incorrect! Search up on a diffrent question and you will know
yes just check in youtube.com and look up how to lower weapon in halo 3 (i think)
Same way as Halo 3
You cant lower your weapon in multiplayer you can only do it when you change your network settings to local.
None of the Halo's have any 'real' cheats, the only one is the lower your weapon one, which is just like Halo 3's.
It's impossible, you can only lower weapons on local or system link
No, not without a mod. But you can in the custom games when playing single player.
it is a halo weapon used in the games halo 3
With a weapon in Halo 3
both
Dying
Yes. The sentinal beam is a weapon.