The Athlon NEOS HMR 3-9x40mm rifle scope features a specialized BDC 22 Rimfire MOA reticle designed specifically for .22 rimfire ammunition with 3-9x variable magnification and a 40mm objective lens.Athlon NEOS HMR 3-9x40mm Rifle ScopeBDC 22 Rimfire MOA reticle optimized for .22 caliber3-9x variable magnification with 40mm objective lens1-inch tube diameter with black matte finishField of view: 36.2-11.5 feet at 100 yardsCompact design: 12.2 inches length 17 ounces weightPerfect for rimfire target shooting small game hunting and precision .22 caliber applications where reliable accuracy and specialized bullet drop compensation are essential.