I'm in, too, brother - 12.5" on the way. That's the exact same barrel construction as my 12.5" Grendel barrel from them, and I know how that one really performs. Can't wait to get it and fire it up with my hotass handloads. Got a good load worked up through the 18"er right now, and it's SCREAMIN'!!!
Got a LaRue Grendel BCG just sitting here doing nothing, along with the badass LaRue gas block, so why the fuk not, right?... I KNEW this was gonna happen again...