Shop AR uppers and upper receivers at Gun Garage Tactical, including complete AR uppers, stripped upper receivers, assembled uppers, caliber-specific uppers, and replacement upper receiver components for AR-platform rifles and pistols.

AR uppers and upper receivers allow shooters to build, upgrade, repair, or reconfigure AR-platform firearms for different calibers, barrel lengths, handguard setups, optics, suppressor use, and shooting applications. Browse available AR uppers by manufacturer, caliber, barrel length, finish, configuration, price, and availability.

Need help choosing the right AR upper or upper receiver? Contact Gun Garage Tactical for help confirming lower receiver compatibility, caliber selection, barrel length, gas system, handguard setup, and the best upper configuration for your build.