The p-415 was designed to be unstoppable in all environments.It is a product of constant development and design improvement.It's reliability has been tested time after time, and the operating system has been perfected.With the development of our e2 extraction technology, complete ambidextrous fire controls, free floating rail platform, and numerous other improvements the p-415 edge is the pinnacle of all modern sporting rifles.To reduce weight and increase shooter comfort, our p-415 edge upper features the an all new handguard, reducing the size by nearly 20%.As a result, we have made the width a mere 1.75 inches.Not only did we drop the weight of the platform, we also provided better ergonomics for the shooter.Receiver Finish: Black Hard Coat AnodizedCaliber: 5.56x45mm NATOSights: None, Optic ReadyBarrel Length: 16.50"Barrel Material: 4150 Chrome Moly Vanadium SteelBarrel Finish: Black NitrideHandguards: 14.50" M-LOKHandguard Finish: Black AnodizedBarrel Length Range: 16" to 16.99"