Get Meprolight advantage with the Tru Dot Fixed Ruger Night Sight. This optic is unequaled in low light performance with the brightest night sights available today. This sight is also used by Military and Law Enforcement and is a front sight only for use on the Mini-14R rifles manufactured prior to 2005. Meprolight Tru Dot Fixed Ruger Night Sight is covered by a 5 year usable illumination warranty to original purchaser. Abuse, improper installation or damage will void the warranty.