The BSA Sweet .270 AO Riflescope is a 3-9x40 scope built for .270 caliber firearms. This scope is calibrated for 100 gr, 130gr, and 150gr 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 Dovetail rings. Made with 1 diameter all-aluminum one-piece tube, this rifle scope is waterproof, shockproof, and fog proof.