Sweet 17 Series Scope 3-12X40mm A/O Hot New Scope That Is catching On Fast With Varmint And Target Shoots. They Feature a Quick Change Turret System specially Calibrated For Multiple Grain Weights For The Calibers: .17HMR, .22LR, .223, .243, .270, .30-06. Features: - Calibrated For The .17 HMR. - Adjustable Objective. - Includes 17Gr Turret Drums. Specifications: - Magnification: 3 - 12X - Obj. Lens Diameter (mm): 40 - Exit Pupil Range (mm): 10.8 - 3.6 - Field Of View @100 Yds: 28 - 7 - Optimum Eye Relief (In): 3 - Parallax Setting: 10 To 8 - Click Adjustment Value: 1/4 - Adjustment Range: 30 - 30 - Transmission(%) Day/Night: - Weight (ounces): 19.40 Mfg: Bsa Model: 17312X40AO