· Quality Built with lightweight aerospace grade aluminum alloy with durable black matte finish · Mil-spec 5-slot picatinny rail section fully compatible with any key mod handguard mougntin sytstem 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 · 2 Inch in Length