Luth-AR AR-15 A2 Rear Sight Kit

Compatible with A2-style AR-15 upper receivers, the Luth-AR AR-15 A2 Rear Sight Kit features all-steel construction with a matte black finish. The kit includes one UR-29 A2 rear base lug, one UR-27 A2 rear sight aperture, one UR-28 rear base flat spring, one UR-26 rear base windage knob screw, one UR-23 rear base windage knob, one UR-22 rear base windage pin, three UR-24 rear base springs, three UR-25 rear base ball bearings, one UR-33 rear base index elevation (8/3), one UR-34 rear base elevation knob, one UR-31 rear base elevation knob spring, one UR-06 rear base spring pin, and one UR-32 rear base index screw. Professional installation by a qualified gunsmith is recommended but not required. Made in USA.