The LWRC SIX8-PSD 6.8 SPC 8.5" 1:10" 5/8x24 Bbl Tungsten Grey Complete Upper Receiver is designed for close-quarter combat and rapid target acquisition. Featuring an 8.5-inch barrel with a 1:10 twist rate, this upper receiver ensures consistent accuracy and effective heat management. The tungsten grey finish adds a unique and tactical appearance while providing excellent protection against the elements. The SIX8-PSD is equipped with a short-stroke gas piston system that minimizes recoil and enhances performance. Fully ambidextrous controls and a modular rail system offer customization and comfort, making this upper receiver a versatile and dependable choice for shooters seeking high performance in confined spaces.