Six thousand rounds through my Magpul MIAD equipped AR. This is a combination of bench time and two Carbine courses. The pin does come with the kit if you choose to run it. I have found the backstrap is damn near impossible to remove even when you are trying to get it off. A quality product and ideal if you like the larger diameter grip, I have ham hocks for hands and sausages for fingers so I need all the help I can get. YMMV.
NUNQUAM NON PARATUS