halothemasterchiefcollection Stop Chief playing with his weapon in campaign

[CommanderLake]

I would like to record some still clips of the campaign with the blind skull on but Chief keeps playing with his weapon which makes sound, I want sound effects but not this, is there a way to get rid of the sound of him playing with his weapon when idle at least in Halo 2?

[CommanderLake]

I have Assembly but I don't see any parameters that say don't fiddle with gun.