NECA Half-Life 2 &ndash; Prop Replica - Zero-Point Energy Field Manipulator Replica measures approximately 2 feet in length. Replica features glowing orange LEDs, 2 handles, 2 triggers, and 4 unique sounds directly from the game. Limited edition gravity gun. Requires 3 "C" batteries, not included. Requires 3x "C" Batteries Not Included.