Heya, yeah if you have downloaded the stand alone, that was a test sound, I have many for the GBU but I have to make ti to where it sounds as close and also as far distance, to get the in between. At first, the game engine was using AT impact as the GBU sound also, very unrealistic. he stand alone should have that fixed, but the sound I know needs to be changed, alot of people do not like it, though I can show a video of its likeness. in the next beta release or final that should be fixed , thanks for downloading.