I just needed to field take a look at the LCR in 9mm to see if it met or exceeded the performance of your LCR I already have. Nearly all of my handguns and carry guns are in 9mm caliber, which I choose.† Notice: The receiver-mounted, Picatinny-design rail is created to support most optics and optic mounts meant for use with Picatinny/ MIL-STD 191