So, you're looking for Complete Upper Receiver? Brownells.com has the best selection and pricing around. We've got 7 Complete Upper Receiver and Gas Piston Upper Receiver, from $639.99 to $1,199.99, meaning your search is over. As the internet's top seller of gun parts and gunsmith tools, we're able to bring you the best products, excellent prices, and reliable customer service every day. We love the products we sell, and we know you will, too. We provide a 100% satisfaction guarantee with all of our products, so if you're not satisfied with your Complete Upper Receiver for any reason, let us know right away. Shop our inventory of Complete Upper Receiver and place your order on the web or over the phone. We're here to provide you with all the gun parts and gunsmith tools and information you need, so - if you don't find what you're looking for online - give us a call!