Integrated Pistol Grip Upper Picatinny Rail Buffer Tube and CBS Stock The ultimate kit to replace the factory stock pistol grip and more. Providing better accuracy stability and comfort. - Provides top Picatinny rail for sights - Includes the #UPG47 pistol grip for ideal comfort - Our popular #CBS collapsible stock - Accommodating with M4 style 6 positions buffer tube - Six ultrasonically welded metal receptacles for push button sling swivels - Fits: Remington 870 - Weight: 1.62 lbs - Color: Black