Probably only models with High Collision LOD can be bullettraced. Maybe make e.g. a sphere in Maya, export it with High Collision into CoD2 and just link that sphere to every player.
When bullettrace hits the sphere, you can access the player entity via trace["entity"].playerPHP Code:
player.sphere = createSomeTransparentSphereAndLinkTo(player);
player.sphere.player = player;
High Collision LOD in Asset Manager: https://killtube.org/showthread.php?...ull=1#post9426