Finish up your rifle build that’s been sitting in your closet with the RISE Armament® AR-15 Upper Parts Kit. This 7-part upper parts kit is a mil-spec kit containing the parts necessary to assemble an AR-15 lower receiver. Plus, most parts in this kit feature durable steel construction with a black phosphate corrosion-resistant finish so you can get the most out of your next rifle build. What’s more, this kit is backed by a lifetime warranty from Rise Armament so you can have added peace of mind when you pull the trigger on your new build for the first time.