MEPROLIGHT combat-proven self-illuminated night sights enable you to upgrade your capabilities to hit stationary or moving targets under low-light conditions with dramatically increased hit probability. Test results by marksmen and journeymen level shooters have shown an increase of over 85% in hit efficiency, using Meprolight self-illuminated day/night sights. Designed as replacement parts for the standard weapon sights, Meprolights Self-Illuminated night sights can be mounted directly with minor modifications. Superior production methods and rigid quality control have made Meprolight the first choice among law enforcement agencies, defense decision-makers, and major weapon manufacturers. Fits Remington 870/1100/11-87 (6-48 Threads).