The BSA Sweet 6.5 AO Rifle Scope is specifically designed for the 6.5 Creedmoor cartridge. Complete with 3 ballistically calibrated turrets for 120gr, 129gr, and 140 gr cartridges, the Sweet 6.5 AO also features an adjustable objective, fully coated lenses, 30/30 reticle and 2 pc. weaver ringsFeatures :MAGNIFICATION LOW: 4.5XMAGNIFICATION HIGH: 18XOBJECTIVE LENS DIA. (MM): 40ADJUSTMENT GRADUATION (MOA): 1/4LENS COATING: Fully CoatedW/E ADJUSTMENT RANGE: 35EYE RELIEF (INCHES): 3ADJUSTABLE OBJECTIVE: YesSIDE PARALLAX ADJUSTMENT: No