The XS Sights AR-15 A2 Tritium Front Sight is expertly crafted for enhanced target acquisition in any lighting condition. Made from precision-machined stress-proof steel it features a vertical tritium vial with a white outline ensuring clear visibility. The square top post measures 0.105 inches wide and offers a 5 MOA elevation adjustment per full rotation allowing for precise aiming at 100 yards. Designed to fit AR front sight housing with detents at 3 6 or 9 o'clock this sight is a reliable choice for AR-platform firearms. Please note it is not compatible with ARMS backup sights due to its blade length. Proudly made in the USA this sight promises durability and accuracy.