CRUSHUNT 4x32 ACOG Hunting RifleScopes Red Chevron Glass Etched Reticle Real Fiber Optics Tactical Optical Sights Scope Suitable for any 20mm RIS weaver standard rail. Water Proof, Shock Proof, Fog Proof, and Weather Proofed. Chevron Reticle,Forged Aluminum Body, Real Fiber Optic,Don't need the battery. Feature bright daytime reticles using fiber optics, which collect ambient light.