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29 of 29 Items
Complete AR upper assemblies for your custom rifle, SBR, or pistol!
Every AR upper we offer is meticulously assembled and configured to be of at least mil-spec quality, and made to be compatible with all components for its caliber. We've carefully build our catalog of upper assemblies to offer quality, affordable options for the most popular AR calibers, including 5.56, .223, 300 Blackout, 9mm, 6.5 Grendel, 6.5 Creedmoor, and .308 Wincester.
All our uppers are assembled and test-fired to ensure reliability before shipping. All uppers come with a "No BS, No Questions Asked" warranty against defects. All uppers are made from the highest quality billet and forged alloys with precision CNC milling and anodizing to afford a perfect fit and finish.
Lastly, we hand-pick all our uppers' components and configurations to ensure every unit provides optimal functionality for different AR builds. Whether you're putting together a 24"-barreled, long-range rifle, a 16" mil-spec plinker, or a short-range defense SBR or pistol, you'll find an upper with the right gas system, handguard, barrel length, twist rate, and other components to get the job done.
Can't decide between a carbon and stainless barrel? Read the Guide to AR-15 Barrels.
All upper ship fully assembled, with all above components installed and ready for use.
Some states have banned the sale of upper assemblies, receivers, 80% lowers, and certain firearm parts, or have otherwise restricted the sale and ownership of products we sell. So, be sure to check your local and state laws. We can’t ship our products to certain states. Please check our Shipping & Return Policy before placing an order (see restrictions).
Your build awaits you.
DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.
DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-Lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.
We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.