This Ncstar VAARVGKM Vism KeyMod Short Vertical Grip Is Quick detachable Tool-less Direct Mount grip. Low-profile length for increased mobility and less snagging. Aggressive texture short vertical grip mounts onto KeyMod slots without the need of any tools. Pull out the grips internal core and with a simple twist you can secure the grip to your KeyMod™ slotted handguards. Center core also can store a single CR123A or small parts. Dimensions: 3.0"H X 2.2"L X 1.3"W.