NUPROL - Vertical Grip for 20mm Rails - Black is a Vertial Foregrip designed to give the user an extra control point on their weapon. The foregrip is constructed from Polymer and is designed to fit 20mm RIS / RAS Rails. The grip is secured tightly onto rails by first sliding it on then screwing the bottom until it is locked in place. The grip can be placed anywhere up and down a Rail, and is designed to allow the user to chose where the aditional control point on their weapon is placed. Product Details: Construction: Polymer Colour: Black Compatibility: 20mm RIS / RAS Rails- Features: Vertical Fore Grip Lightweight polymer design Screw in Rail Secure Tightly locks into place Low Profile Grip Package Includes: Vertical Grip for 20mm Rails