Front sight FOCUS – LOCK ring for even faster focus – Quick and accurate U-notch Design – Angled rear sight edge for emergency one-hand operation – Assembled in USA with quality Swiss Tritium for maximum brightness – Unmatched visibility in low-light shooting conditions or complete darkness – Utilizes quality Swiss tritium for maximum brightness – Glows-in-the-dark no batteries or light exposure required – FORTRESS FINISH provides a permanent protective coating for maximum protection – Snag resistant design / fits standard holsters