How to use single-shot audio for gun and play it as fully automatic

Hello! So I am trying to make a fps game and i’m at the part where I need to play the gun audio when I shoot. So I have asked a lot of people and they all say that you need to have a single-shot audio and play it repetedly when shooting, all of the single-shot audio files I can find are long and if you play it looped, it’s too long. Is there any way in Unity to play the single-shot audio looped for a fully automatic gun, like a m4a1, and make it sound realistic? Games like CS:GO use single-shot audio and they’re long audiofiles too, here’s an example of one

I use Audacity, (a free sound editing program) to just isolate the part I want, trim it, and export as short clip.