The LWRC IC-PSD 5.56mm NATO 8.5? Tungsten Grey Personal Security Detail Complete Upper Receiver (ICMKIIU5TG8) brings LWRC’s battle-tested short-stroke gas piston technology and rugged build quality to a highly compact AR-style platform. Featuring an 8.5-inch cold-hammer-forged barrel with a 1:7? twist and 1/2×28 muzzle threading, this complete upper is optimized for stabilizing a wide range of 5.56 NATO ammunition while allowing easy integration of suppressors or tactical muzzle devices. The Monoforge™ upper receiver with integrated rail base offers a strong, straight foundation for mounting optics and accessories, while the modular rail system lets you position accessories exactly where you need them. With a nickel-boron coated bolt carrier for enhanced durability and smooth operation, fully ambidextrous charging handle, and LWRCI™ Skirmish flip-up sights included, this upper is built for reliability and versatility. Finished in striking Tungsten Grey for a professional, tactical aesthetic, the IC-PSD upper is an ideal choice for upgrading or building a precision compact rifle that performs in personal defense, tactical, or close-quarters applications. LWRC IC-PSD 5.56mm NATO 8.5" 1:7" 1/2x28 Bbl Tungsten Grey Personal Security Detail Complete Upper Receiver ICMKIIU5TG8