For the most part are all the controls the same on AR LPK's? Meaning the mag release, safety selector and slide stop. I am trying to build new AR and I am thinking of how the end product will look this time around, and was wondering if any full parts kits came with an alternate style controls? I have no issues with the basic ones, just looking to change it up a little this time around. Or is this something you need to source out individually?