The XS Sights DXW2 Big Dot Sight is designed for Glock 42, 43, 43X, and 48 handguns. This night sight features a tritium-powered front sight that measures 0.188 inches. The high-contrast yellow front ensures visibility in various lighting conditions, while the low-profile V rear sight enhances the ability to acquire the front sight quickly.Key FeaturesTritium Powered Front Sight: Provides illumination in low light conditions.Big Dot Front: The large dot design aids in faster target acquisition.Glow Dot: Absorbs ambient light and glows in low light for enhanced visibility.Low-Profile V Rear: Offers improved visibility of the front sight.Durable Construction: Made from CNC machined steel for lasting durability.Rear Sight Ledge: Allows for one-handed slide manipulations.