Near Clip Plane doesn't do anything

Hi, what does it suppose to do? It does nothing. No matter how much I set the value to be, it does absolutely nothing. I am trying to get rid of the weapon/head clipping into the camera, and yes, moving the weapon or head or camera is not an option.
Is that a youtube prank? It does nothing really

You need to restart the engine for it to take effect… until you do that it won’t do anything.