The Phase 5 Vertical Hex Grip - PICATINNY is the perfect balance between functionality and design. Mounted to any 1913 picatinny rail, the VHGPIC is ideal for any shooter looking add a vertical foregrip for increased control and mobility. Precision machined from USA certified 6061-T6 aluminum and finished with Class II black anodizing. Available in two sizes to meet the requirements for different shooting styles (2.25" and 3.75").Material: 6061-T6 billet aluminumCompatibility: Any 1913 Picatinny Rail SystemContents: (1) Vertical Hex Grip (1) Mounting Screw (1) Hex L-Wrench