100% Risk Free, Lifetime Warranty The Monstrum Tactical Mid Length Picatinny rail is designed for use with standard Keymod rail systems. The Picatinny 1913 rail is 13 slots long or 5.25 inches in length and accepts all standard Picatinny accessories. The rail installs quickly to any universal Keymod platform, allowing for fast modular attachment of grips, bipods, sights, or other accessories. The package includes all necessary screws and locking nuts, as well as a hex wrench, no additional tooling is required for installation. Available in Black or Flat Dark Earth. Includes: x2 13 Slot/5.25 in Picatinny Rail Section, Screws, Nuts, and Allen Key. Materials: 6061 Aircraft Grade Aluminum Compatibility: Rifles with Keymod handguard. Weight: 1 oz/piece Length: 5.25 in Color:Flat Dark Earth Warranty: Lifetime