Gives your P365 a Picatinny Rail compatible with compact rail mounted accessories. Easy to install with the supplied hardwareNo modifications to your P365 required, will not damage your firearm. Recommended Lights Olight PL Mini 2, Streamlight TLR3, TLR4, Viridian C5L, Viridian CTL, Streamlight TLR-7 and Streamlight TLR-8 with the ReCover Tactical Key, Crimson Trace CMR-202