Ade Advanced Optics 6-25X56 35mm Long Range Rifle Scope Illuminated Mildot Barbr Heavy duty one piece main tube provides the foundation for precise lens alignment and other components br Extended-range tactical riflescope with 6-25x magnification and 56mm objective lens br Illuminated Mil-DotBar reticle precision controls with 140 MOA adjustment br The use of water resistant sealants synthetic grease and secure O-ring seals protect against fogging br 35mm tube diameter includes mounting rings matte black finish