Wholesale Pro 3-9x40 Hunting Mil Dot Air Rifle Gun Outdoor Optics Sniper Deer Hunting Scope + 11 Mm/20mm Rail Mounts Free Shipping Magnification: 3-9X Objective Diameter: 40mm Material: Aircraft-Grade Aluminum Alloy Length: 12.2" (31cm) Weight: 350g(12.35oz)