This is a BSA Sweet hunting rifle scope, 3-12x40mm. It is calibrated for the .223 round. It has an adjustable objective with magnification 3-12X. This scope has a quick change turret system allowing you to shoot 50, 55, & 62 grain .223 bullets. This durable & reliable scope comes with a lens cleaning cloth, screw on lens covers, and a box. It is BSA model #223-312X40AO.