2" Keymod Rail Section Picatinny Rail for Key Mod Handguard Mount Rail System, 1/2 Inch Picatinny Weaver Rail Flat Top Riser Mount for Scopes and Optics Quality built rail system with lightweight aerospace grade aluminum alloy with durable black matte finish. Mil-spec 5-slot picatinny rail section fully compatible with any keymod handguard mounting system. Perfect for attaching your 1913 picatinny lights, bipods, forward grips, sights, or other accessories. Solidly attached using the keymod rail interface, great for rifles, shotguns paintball & airsoft. Package includes all necessary screws and locking nuts, as well as a L hex key for easy installation.