Ballista Folding Vertical Foregrip FG-02 Nylon. It can be folded which is perfect for saving space when transporting and storing the crossbow. Constructed from lightweight yet durable nylon material the foregrip can be mounted on a Picatinny/Weaver 20mm mount. Its ergonomic design provides a comfortable and secure grip. Specifications for Ballista Folding Vertical Foregrip FG-02: Manufacturer: Ballista Material: Nylon Fabric/Material: Nylon Mount: Weaver Picatinny Features of Ballista Folding Vertical Foregrip FG-02 Suitable for BALLISTA BAT and BALLISTA BAT Reverse with Bottom Picatinny Rail Folding foregrip saves space when carrying and storing Lightweight and durable as it is made of nylon Mounted on a Picatinny/Weaver 20mm mount Ergonomic foregrip fits well in the hand Package Contents: Ballista Folding Vertical Foregrip FG-02 Ballista BAL-FG-02: Folding Vertical Foregrip FG-02 Nylon