Ultimate Arms Gear Mauser K98 Rifle Weaver Picatinny Rail Scope Sight Mount + Silver CQB 4 Reticle Dual Red / Green Open Reflex Sight with Weaver-Picatinny Rail Mount - Package Kit Set Mauser K98 easy to install Rear Sight Replacement Base Mount fits mil spec Mauser K98 and most other K98s. It has 13 separate slots (approximately 5.25" length) and 2.5 oz weight. It replaces the rear sight, and is made from high grade aircraft aluminum with a black anodized finish and will give you amounting platform for your scope, sight, or other 7/8" accessories. Hardware Included. 4 Separate Reticle Patterns In Both Red and Green 6 Diferent Brightness Settings (3-Red 3-Green). Tubeless Open Reflex Design. Windage and Elevation Adjustments. 1x Magnification. Objective (mm)-24x34. Unlimited Eye Relief. Multi-Coated Lens. Black Finish. Windage & Elevation Adjustments. Weight-4.2oz. Length-3.25". Wide Sharp Field of View. Weaver-Picatinny Rail BAse-Great For Rifles-Shotguns or Any Weapon with A Weaver-Picatinny Rail. Thermoplastic Lens Cover Included. Battery Included