Xs Sight Systems Xs Standard Dot Green Ruger Lcr .38/.357 Only Defense Set. 38/.357 Only Defense Set - XS Sight Systems front and rear sights utilize a gas block with an adjustable sight notch. This allows the shooter to center the tritium via a flash welding process. The sights will have a burnt orange/green/white/red ring around the tritium via a flash welding process. This color is very visible to the human eye and enables the shooter to quickly shoot aim and target his firearm. This is a very popular rear sight due to its great looks ease of use and the great success rate with which it has been used. The rear sight does articulate with the front sight but will not ring in with the front sight. Specifications for Xs Sight Systems Xs Standard Dot Green Ruger Lcr .38/.357 Only Defense Set: Manufacturer: XS Sight Systems Fabric/Material: Steel Tritium Height: 1.15 in Additional Features: Big Dot Length: 8.1 in Package Contents: Xs Sight Systems Xs Standard Dot Green Ruger Lcr .38/.357 Only Defense Set