Custom Aero Precision 12.5" .308 pistol configuration.
Lots of great parts here: Aero upper and lower, FailZero BCG, LMT charging handle and grip, Ballistic Advantage 12.5 barrel, SLR handguard and titanium adjustable gas block, and M81 cerakote (Surefire brake is not included). No brace.
Asking $1600 OBO - make an offer. Text (don't call) 21four-79four-166zero to arrange a meetup.