Magpul RVG Rail Vertical Grip gives you more control over your weapon system. These AR15 Vertical Foregrips from Magpul Industries are both lightweight and cost-effective. The Magpul RVG Rail Vertical AR15 Grip is compatible with the popular thumb break method of shooting. MAGPUL RVG Rail Vertical Front Grip for AR-15 mounts to any 1913 Picatinny rail hand guard.