Zengi 5-slot Keymod Picatinny Rail Section Precision Machined from Aircraft Grade Aluminum Alloy with Hard Coat Anodizing Black Finish Mil-spec 5-slot Picatinny Rail Section Fully Compatible with Any Keymod Mounting System Solidly Attached Using the Keymod Rail Interface, Great for Rifles, Shotguns Paintball & Airsoft Perfect for Attaching 1913 Picatinny Lights, Bipods, Forward grips, Sights, or other Accessories Includes Required Key mod Compatible Steel Locking Nuts, Steel Allen Screws and Allen Key for Installation