AR-15 Complete Upper Receivers at KAK Industry are designed for shooters seeking top performance and reliability from their AR-15. These fully assembled uppers are ready to mount on your lower receiver, making them ideal for quick upgrades or building a new rifle. Our selection caters to a variety of shooting disciplines, including tactical, hunting, and competitive shooting. For those looking to further customize their rifle, our AR-15 Parts category offers everything from barrels to handguards and gas system. And, for enthusiasts interested in different calibers, our Pistol Caliber Receivers provide options for unique builds. Each complete upper is built with precision and quality, ensuring you receive the best product for your firearm needs. Explore our AR-15 Complete Upper Receivers to find the perfect match for your shooting requirements.