The LWRC SIX8-PSD 6.8 SPC 8.5" 1:10" 5/8x24 Bbl Patriot Brown Complete Upper Receiver combines advanced engineering with a robust design for close-quarter combat. The 8.5-inch barrel with a 1:10 twist rate ensures consistent accuracy and effective heat management. The Patriot Brown finish adds a distinctive look while providing excellent corrosion resistance. This upper receiver is equipped with a short-stroke gas piston system that reduces recoil and enhances reliability. Fully ambidextrous controls and a modular rail system offer customization and comfort, making the SIX8-PSD a versatile and dependable choice for shooters seeking high performance in confined spaces.