Athlon Optics BTR 4.5-29x56 APLR FFP IR Brand: Athlon Optics Name: BTR 4.5-29x56 APLR FFP IR Tube diameter: 34.00 mm Objective bell diameter: 61.00 mm Ocular bell diameter: mm Added by: GunDudeUSA Confirmed by: GunDudeUSA Back | New