Turret detach glitch
From Halopedia, the Halo wiki
The Turret Detach Glitch is a glitch for Halo 3. While trying to detach a turret, let go. There should be a turret in your hands and and one still on its original place. This can also be performed in Forge mode. Simply use a turret as normal, and then get a nearby player to turn into the Forge monitor. Have them move you around and press B to detach. You will then have an equipped turret and the ability to use the normal turret as usual.
