The Recover Rail is engineered to fit perfectly on the Glock 42 pistol. The rail enables compatibility with rail mounted gun accessories. Easy to install with the supplied hardware. No modifications to your Glock required, will not damage your firearm. Recommended Lights Olight PL Mini 2, Streamlight TLR3, TLR4, Viridian C5L, Viridain CTL,Viridian CTL, Crimson Trace CMR-202, Crimson Trace CMR-202, Streamlight TLR-7 and Streamlight TLR-8.