Bullet Tracer bug and no muzzle flash

I have some code for a MK17 I am trying to fix on the Steam Workshop but I cannot seem to get Tracers or the Muzzle Flash to work

The tracer seems to be bugged in some way as they never appear from the gun but after a few seconds I may see the flash go to the point of impact a few seconds later from a completely different direction.

Help and any ideas will be greatly appreciated

Edit: Also to note this is intended for Trouble in Terrorist Town