TRUGLO BRITE SITE NIGHT SIGHTS - FNH a Front sight Focus Lock ring for fast focus a Quick & accurate U-notch design a Angled rear sight edge for emergency one-hand operation a Assembled in USA w/quality Swiss tritium for maximum brightness a Great visibility in low-light shooting conditions or complete darkness a Utilizes quality Swiss tritium for maximum brightness a Glows-in-the-dark - no batteries or light exposure required a Fortress Finish(TM) provides a permanent protective coating for maximum protection a Snag resistant design / fits standard holsters a Fits FNP-9 FNX-9 & FNS-9 (Including Compact)