The 
NUPROL Skeleton Foregrip (RIS) - BLACK
 is an angled, low-profile airsoft grip designed to improve rifle stability and serve as a handstop for the "C-Clamp Grip" technique. It attaches to standard 20mm RIS/Picatinny rails and is made from a durable polymer material. 
 
 
Product Details
Design: The grip has an angled, low-profile design to integrate seamlessly with the rifle's appearance.
Function: It is intended to improve rifle stability and acts as an excellent handstop, particularly for users employing the "C-Clamp Grip" method.
Compatibility: It is designed to fit onto all standard 20mm RIS/Picatinny rails.
Material: The grip is constructed from a lightweight, yet tough and durable, polymer material.
Customization: It is supplied with a spare panel, allowing the user to remove the central ridge of the grip if preferred.
Attachment: The grip slides onto the rail and is secured firmly in place with a screw at the base.