Trijicon 4X 32 ACOG Red LED .223 Horseshoe Reticle with TA51 Mount 4x Magnification 32mm Objective Size Includes thumbscrew flattop adapter, AA battery, lens pen, lanyard assembly for adjuster and battery cap, logo sticker, manual, and warranty card 4x magnification with a 35mm objective lens Red Horseshoe BDC reticle Bullet Drop Compensator reticle for .223 flattop rifles Uses 1 AA Battery Forged aluminum housing