[help] Trigger Install

So A buddy of mine gifted me a Geissele Trigger National Match Trigger. So when watching videos I have seen some where they just remove the trigger and I have seen videos where they have also removed the Grip. I have a Ruger 556, has anyone had any similar trigger installs with this AR?

TL;DR Geissele Trigger on a Ruger AR556, How to Install?