Just got a Glock 19, looking for a good holster and a good tactical grip?

Can anybody give me advice on a good holster for a Glock 19. I am looking for a holster that won't get in the way of an AR-15 (that I will probably be carrying as my primary). I am also looking for a good tactical grip that will give me better accuracy. And to answer all your side thoughts, I'm just another prepper.