The 4×40 Crossbow Scope from Huskemaw is a fixed-power scope that features a calibrated Arrow Drop Compensator (ADC) turret to precisely match the trajectory of high-speed crossbows at extended ranges up to 150 yards. - High-definition image resolution - Calibrated Arrow Drop Compensator (ADC) turret - Fast-focus eyepiece - Glass-etched reticle - Red/green illuminated dot with five intensity levels - Cement-bedded lenses - Multi-coated lenses - Heavy-duty one-piece aircraft aluminum body for ultimate durability - Fogproof shockproof and waterproof construction - Adjustable zero index ring - Overall Length: 9.7 in - Weight: 20.1 oz - Tube Diameter: 30 mm - Objective Lens Diameter: 40 mm - Eyepiece Diameter: 36 mm - Max. Mounting Length: 4.3 in - Field of View @ 75 Yards: 31.4 ft - Click Value: 1 MOA or 2 MOA - Clicks / Revolution (1 MOA): 60 clicks / 60 MOA - Clicks / Revolution (2 MOA): 60 clicks / 120 MOA