SureFire Picatinny Rail – AR15/M16 Rifle Length Round Front Handguard Bracket – This SureFire Picatinny rail forends replace your weapon's factory forend, providing multiple rails to mount accessories such as lights or laser sights. Precision machined from high-strength aluminum, that's Mil-Spec hard anodized, they're extremely tough, dissipate heat efficiently, and provide a rock-solid mounting platform.