I've been doing a ton of research on this round, and I'm pretty much set on building it. I was just wondering if anyone here has ran across Eisenach Arms and if so what's your opinion on them? I was looking at getting a side charge upper from them, just because i hate the awkward charge handle and bolt catch position that you have to do when locking the bolt back to the rear, and plus i've always loved the look of a clean side charge.