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