I built this upper for a coworker and he's never used it. I know I bedded the barrel to the receiver and I suspect that I bedded the gas block as well because I figured he'd run cheap ammo.
16" 5r 6.8 ARP chamber, w/headspaced bolt, Socom? Contour, bought it well before Harrison retired, A2 style flash hider
15" ALG EMR V2 15" Handguard
YHM Gas Block
Aero Slick Side upper
2 ASC 25rd magazines
20rds Hornady 110gr V-Max
Figures out to roughly $540 without the ammo.
I would rather make this a face to face transaction so that I can avoid shipping the ammo.