POF-USA designed its gas piston system over 20 years ago to be unstoppable in all environments. It is a product of constant development and design improvement. Its reliability has been tested time after time, and the operating system has been perfected. With the development of our E2 Extraction Technology, free floating rail platform, and numerous other improvements, our P-415 uppers are the pinnacle of all Modern sporting rifles. To reduce weight and increase shooter comfort, all piston uppers feature 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, but we also provided better ergonomics for the shooter.

All Gas Piston upper receivers are compatible with Mil-spec AR-15 lower receivers.