Command Arms Short Vertical Grip fits Picatinny Rail: * Compact, vertical forward grip that puts the user in a comfortable fighting stance * No tools required * Incorporates a no tool screw cap storage compartment * Rubberized front and back panels for comfortable non slip grip surface * Dual removable pressure switch mounts * Captive thumbnut can"t be lost * Provides quick and easy installation without tools to Picatinny rail