Patriot Ordnance Factory P415 5.56mm NATO 16.5in Black Anodized Semi Automatic Modern Sporting Rifle - 10+1 Rounds - The P415 was engineered to be virtually unstoppable in unfavorable conditions. It is a product of continuous development and improvement to the AR platform that no other rifle company has attempted. The reliability has been tested time after time, and the operating system perfected. E2 Extraction Technology, complete ambidextrous fire controls, modular free floating rail platform, and numerous internal improvements make it the pinnacle of firearms.