I just got my Son to help me put together my first AR. I went with an Alexander Arms 6.5 Grendel Overwatch Upper, an Anderson lower, and a Rock River NM trigger. I stuck on an old 15X Weaver target scope to rush it to the range. I'm pretty happy with it so far. Now I need to get a proper scope for it.
6.5 Grendel is a great caliber ..... old Weavers are hidden gold. Love em. Sounds like a great rifle build.