Add accessories to your AR-15 firearm without any permanent alterations with the Mission First Tactical Tekko Metal AR Carbine Integrated Rail System. Drop-in screwless installation for quick and easy attachment. The Tekko Metal Rail System is secured with a Delta ring and handguard cap. Four MIL-STD 1913 Picatinny Rails provide a steady platform for mounting Picatinny accessories such as vertical grips, lights, laser, and more. The monolithic style continuous top rail eliminates the gap between the receiver and rail to guarantee that the rail system is fastened. The Tekko Metal AR Carbine Integrated Rail System is constructed out of lightweight 6061 aluminum and is hard coat anodized. Made in the USA. Lifetime warranty. Length: 7".