Discovery red dot RDA 1X20 Fit Picatinny 20mm Rail

Discovery red dot RDA 1X20 holographic optical sight Tactical rifle scope Optics Hunting collimator Fit Picatinny 20mm Rail Function: Red DotModel Number: CRD RDA 1X20Brand Name: DiscoveryType: RifleModel Number: RDA 1X20magnification: 1XObjective Aperture: 20Rail system: 20mm PicatinnyDot color: Red (LED, 100% safe for the eyes)Material: Black Anodized Aluminum BodyNitrogen Purged: YesShock-Proof: YesWater-Proof: YesFog-Proof: Yes