So I am toying with the idea of getting a bump stock for my core ar15. I don't know much about them besides the basics. I've watched a couple youtube video, looked at the company websites, and did a thread search on here that didn't turn up much. So, I was just wondering what your thoughts were on the product, which product is best in your opinion, and any cons to the idea I may not have thought of. I'm not a big fan of burning through ammo but I thought it might be a nice option to have if I ever decided it was necessary in a last ditch effort kind of situation. Also, should I consider upgrading my trigger if I go with a bumpstock?