Millett Compact 1x20mm 3 MOA Red Dot Riflescope, Silver - RD00904 Quality optics with stunning HD clarity 100% quality materials used and tested extensively Beautiful design and durability built to last Waterproof and shockproof, crystal clear, parallax-free sighting. Precision-click adjustments for windage and elevation. Dot intensity control switch with eleven settings. Compatible with almost any rifle with a Picatinny rail or Weaver-style mount. Includes CR2032 battery, 2 vertical split Weaver-style rings, scope covers, and an extension tube.