Complete Uppers

Rise Armament 6MM ARC Complete Upper 18in Patriot Brown - RA-6ARC-CU-BRN-18 This item ships free. Upgrade your AR-15 platform with the Rise Armament 6MM ARC Complete Upper, a premium quality upper receiver assembly designed for precision and performance...

Rise Armament 6MM ARC Complete Upper 18in Black - RA-6ARC-CU-BLK-18 This item ships free. Upgrade your AR-15 platform with the Rise Armament 6MM ARC Complete Upper, a premium quality upper receiver assembly designed for precision and performance. This...

Radical Complete Upper Receiver .223/556 16" Barrel M-LOK Handguard Upgrade your AR-15 build with the Radical Firearms Complete Upper Assembly. This high-quality upper receiver is chambered in both .223 Rem and 5.56 NATO, offering versatility and...

CMMG Resolute MK4 6mm ARC Upper with 16.1" Barrel, Black - 60B1091ABExperience the power and precision of the CMMG Resolute MK4 6mm ARC Upper! This cutting-edge upper receiver group is designed to deliver exceptional performance in a lightweight,...

Radical Firearms 16" Barrel 300 Blackout Complete Upper (RAFRF00375) This item ships free.  The Radical Firearms 300 Blackout upper provides a fully assembled MIL-STD upper that can seamlessly attach to any MIL-STD lower receiver. Whether...