The two-piece four-sided Picatinny rail system handguard set requires no gunsmithing! Metal heatshields dissipate the high temperatures. Includes four thermal rubber covers for grip. Black - Replaces 12" handguard - Easy to install. No gunsmithing - 4 sided Picatinny rail system - Metal heatshields dissipate high temperatures produced during sustained rapid fire. - Thermal rubber covers enhance grip and protect rails when not in use. - No gunsmithing required, handguards mounts just like factory handguards. - Rail covers included. - Polymer Material - LIFE TIME WARRANTY