Aero Precision complete factory assembled upper receiver, M4E1 with 15″ Atlas S1 M-LOC handguard and mid-length gas Gov’t profile barrel in 5.56, ‘Delta’ compensator/flash hider – no sights or bolt carrier. Very low round count – ammunition shortage. Near new/excellent condition. $500.00 Please call Milt at (970) 667-2474 (land line – unable to read text messages) or e-mail to stefek@comcast.net – thanks.