I have a 20in rifle gas barrel using a carbine stock set up with a H2 buffer. It works great on anything I feed it steel and 5.56 spec alike. I was wanting to put a Vltor Emod stock on it. Mainly for looks, comfort, and to add a little rearward weight. Is the A5 kit with its proprietorial buffer worth the $220 price tag vs just the stock for $95?