Clever Top/Bottom 3-piece Covers with Integral Spinal Cords/Alignment Housing for Perfect Fit with Barrel Nut and Round Front Cap
Includes 19 Top Slots, 23 Bottom Slots, 25 Left/Right Continuous Slots
20mm RIS  designed with Special Cuts to Fit with the Front Sight, Sling Swivel and Bayonet Lug
Fits Car. Length Model 4/15
Easy Installation with No Modification to the Barrel
Model 4/15 Carbine Length Quad Rails with Free Float Extension
Install tools are included . Easy to hook up

Color - Matte black
Weight - 150g (With box)
Rail length - 154mm
Nut to nut distance - 85mm
Rail type - 20mm