The BSA Sweet 30-06 AO Riflescope is a 4-12x40 scope built for .30-06 caliber firearms. This scope is calibrated for 150 gr, 165gr, and 180gr cartridges and features a fully adjustable objective, fully coated lenses, and a 30/30 duplex reticle. This scope offers windage and elevation adjustments with 1/4 MOA clicks. Ready to mount out of the box with the included 1 rings. Made with 1 diameter all-aluminum one-piece tube, this rifle scope is waterproof, shockproof, and fog proof.