Up for sale is a custom built 300 Blackout upper receiver, Vortex Spitfire 1x 32mm red dot, and (550) 300 Blackout rounds (530 reloads and 20 factory) in varying bullet weights. Also included is (6) 100-round plastic ammo boxes for storage. Please see build list and ammo list in last photo for complete breakdown. Asking $600 cash but open to fair offers. Not open to trades.