The BVG Forearm Vertical Grip is a lightweight, modest vertical foregrip that appends specifically to the Picatinny rails, with no extra requirements. It's produced with polymer as other CAA foregrip items; the BVG Forearm Vertical Grip is equipped for positive control in all situations. Features Include: Increases comfort and shooting performance, Provides a comfortable gripping surface, No additional tools are required, Designed with a 7 ring groove to provide operation control and prevent hand slippage, Made with a waterproof storage compartment for 3 CR123 batteries. Sell Unit Each.