The Recover Rail is engineered to fit perfectly on any SW Shield 9mm and SW40 pistol (Including Shield Plus). The rail enables compatibility with rail mounted gun accessories. Easy to install with the supplied hardware. No modifications to your Smith and Wesson required, will not damage your firearm. Recommended Lights Olight PL Mini 2, Streamlight TLR3, TLR4, TLR6, TLR 7, Viridian C5L, Viridain CTL,Crimson Trace CMR-202