Leupold Mark 4 ER/T 6.5-20x50 M5A2 Brand: Leupold Name: Mark 4 ER/T 6.5-20x50 M5A2 Tube diameter: 34.00 mm Objective bell diameter: 58.40 mm Ocular bell diameter: 40.60 mm Added by: GunDudeUSA Confirmed by: Back | New