AR uppers are the upper receiver assemblies used to house key components such as the barrel, handguard, and bolt carrier group interface on compatible AR-platform rifles. They are commonly used in new builds, caliber changes, barrel length changes, repairs, and overall rifle upgrades. Different AR upper configurations can affect handling, compatibility, weight, and intended use depending on the setup. This category includes AR uppers built for proper fit, dependable function, and practical everyday performance.
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Radian Weapons R0903 Model 1 Complete Upper 6mm ARC 18 Inch Black Nitride Steel Barrel
RADIAN WEAPONS$2,169.99Radian Weapons R0903 Model 1 Complete Upper 6mmARC Black Nitride Steel The Radian Weapons R0903 Model 1 Complete Upper is designed for precision shooting with a durable 6mm ARC caliber and an 18-inch steel barrel finished in black nitride. This upper is... -
HK 51001892 MR762 A4 16 Upper Receiver Assembly 7.62x51mm Cold Hammer Forged Steel
HK$2,649.99HK 51001892 A4 Complete Upper Receiver Assembly 7.62x51mm Cold Hammer Forged Steel 16" The HK 51001892 MR762 A4 16 Upper Receiver Assembly is designed for reliable performance with 7.62x51mm caliber firearms. Crafted from cold hammer forged steel, this... -
HK 51001919 MR762 A4 13 Inch Complete Upper Receiver Assembly in 7.62x51mm
HK$2,649.99HK 51001919 A4 Complete Upper Receiver Assembly 7.62x51mm Cold Hammer Forged Steel 13" The HK 51001919 MR762 A4 13 Inch Complete Upper Receiver Assembly is designed for reliable performance with a 7.62x51mm caliber. Crafted from cold hammer forged steel,...
