Terminus Optics TOC1 Red BDC Reticle 4x32 Magnification Prism Hunting Range Rifle Scope 600 Meter Distance BDC Measurement Reticle, 4x32 Magnification, Red Fiber Optical Sight Scope. Water Proof, Shock Proof, Fog Proof, and Weather Proofed. Forged Aluminum Body from Aircraft Aluminum, Total Weight 1.3 lbs, and Very Durable. True Red Fiber Source Powered by Light and can be used in a night range with minor lighting. Adjustable windage and elevation, multi-coated front lens, non-parallax, 20 mm picatinny rail. Prism Scope. United States Company.