- 45 degree offset allows multiple sight setups on a single airsoft gun - Mounts to Picatinny rail and Weaver rail RIS systems - Fits under most full-size rifle scopes - Flip-up sight stays out of the way when not in use - A2 style dual aperature (small and large) - Fully adjustable for windage - Tough aluminum construction - Folds flat for a low profile - Mounts at receiver height In the Box Rear sight assembly Specifications: Construction AluminumMount Picatinny rail/Weaver railOffset 45 degreesWeight 2.6 oz.Finish Matte blackColor BLACK California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov