Command Arms Thunder 3+1 Finger Vertical Forward Grip

The Command Arms Thunder 3+1 Finger Vertical Grip is an economical and durable grip constructed of lightweight polymer with molded-in aggressive texturing for a secure grasp. The Thunder 3+1 is long enough to accommodate a full-handed grip with large hands, while the interior storage compartment is ideal for storing batteries or other essential items. It attaches solidly to any Picatinny-style rail with a screw down clamp locking system.