Discovery RDL 1-35 RD red dot holographic optical

Discovery RDL 1-35 RD red dot holographic optical sight Tactical Hunting rifle scope collimator For Airsoft Rifles Fit 20mm Rail Function: Red DotModel Number: CRD 1X35 RDBrand Name: DiscoveryType: RifleFunction: Red DotModel Number: 1X35 RDmagnification: 1XObjective Aperture: 35mmMaterial: Black Anodized Aluminum BodyRail system: 20mm PicatinnyShock-Proof: YesWater-Proof: YesFog-Proof: Yes