OTW Rifle Scope 4x32 Red-Green-Blue Triple Illuminated Rapid Range Reticle Scope With Top Fiber Optic Sight Stable Rail Mount with Two bolt : 21.7mm Standard Picatinny Weaver Rail Mount with two bolt for double lock design. 3 Color Reticle: Red Green Blue Triple Illuminated BDC Rapid Range Reticle. Easier Shooting: Equipped with glow fiber front sight and pistol style sight for rapid and accurate acquisition. Sealed Protective Design: Waterproof fogproof and shockproof Constrcution with Nitrogen filled. 6-Month Warranty for Quality and Service Gurantee.