This sight is designed for Ruger® LCR® .38/.357 models. When mounted on the LCR® .22 model, however, the point of impact will shift down as much as 5 inches when fired at a 15 yard target. Does not fit the Ruger® LCR® in 22 LR and 22 WMRL. Express Sights™ standard dot Tritium sight for the LCR®. Gunsmith installation recommended. These sights provide a true 24/7 sight picture that is visible under any light conditions and against any background. Contact XS® Sight Systems for technical assistance and warranty information at 1-888-744-4880. Made in the USA by XS® Sight Systems.