Aero Precision M4E1 Rifle. Complete Aero Lower w/ Complete Aero Upper. Geissele SA-E trigger w/ Geissele Airborn Ambi Charging Handle. 14.5" barrel w/ pin welded compensator from the factory. Holosun Optic w/ ACSS reticle included as well. In state on 08/01 and owned by a MA resident.