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Forget the overpriced AR at the big-box gun store. That rifle doesn't have the specs and parts you want, anyway. Build or upgrade your AR with a custom, ready-to-fire upper assembly instead. We spec each upper with the highest quality barrels and 100% U.S.-made parts.
Uppers are available in the most popular calibers: 5.56 NATO, .223 Wylde, 300 Blackout, 7.62x39, 6.5 Creedmoor, .308 Winchester, 9mm, and even .45 ACP! New side-charging uppers and custom Cerakoted uppers now available!
Not all upper are made equal. Some are, in fact, wildly overpriced (looking at you, brand taxes). Others are just cheap and inaccurate. Our uppers are made from high-quality components, but we don't bother with flashy branding or marketing. We let our customers' own reviews speak for themselves.
Our uppers offer S-tier performance without the price. Every upper is carefully pieced together by enthusiasts who've been building custom ARs for nearly two decades.
We hand-pick all our components to ensure every upper provides optimal functionality for different AR builds. Whether you're putting together a 24" long rifle, a 16" 5.56 or .223 plinker, or a short-range, subsonic SBR in 300 BLK or 9mm, you'll find an upper with the right gas system, handguard, barrel, twist rate, and other parts to get the job done.
Can't decide between a carbon and stainless barrel? Read this! 4150 vs. 416R Stainless: Which Barrel & When?
Every barreled upper assembly includes:
Exceptions:
Some states have banned the sale of barreled AR-15 upper assemblies. We cannot ship barreled uppers to: California, Connecticut, Delaware, Washington D.C., Hawaii, Illinois, Maryland, Massachusetts, New Jersey, New York, or Washington.
Please see our Shipping & Return Policy for more information. You will not be able to add an upper assembly to your cart and complete your order if you live in a restricted state.
Got questions before ordering an upper? We've got you covered! Here are the most common questions we get:
Q: Does a barreled upper require an FFL transfer?
A: No. The AR platform's stripped lower receiver is the serialized "firearm" component of the weapon. Upper assemblies are not considered firearms under federal law, and do not require shipment to, or transfer from, an FFL or gun dealer.
Q: How long will it take to receive my upper?
A: We ship all orders with lightning speed from our Indiana warehouse! You should expect to receive your order within 5 to 7 business days. Contact us for a more specific and accurate shipping time based on your location.
Q: Are side-charging uppers compatible with standard AR lowers?
A: Yes, but importantly, some side-charging uppers require a longer buffer. This prevents the BCG from over-traveling, which can result in the charging handle striking the rear of the upper receiver's ejection port and causing damage. When it's required, a longer buffer is included with your order.
Q: Can side-charging uppers be converted to rear-charging?
A: Yes. All side-charging upper receivers and BCGs are compatible with standard rear charging handles. Simply unbolt the side-charging handle from the BCG, separate the upper and lower receivers via the rear takedown pin, and install your rear-facing charging handle.
Q: What's the difference between a rifle and pistol upper?
A: Rifle uppers come with barrels measuring at least 16" in length. This is the minimum legal barrel length any rifle must have, otherwise, it would be classified as a short-barreled rifle. Pistol uppers have barrels measuring less than 16" in length, and must only be installed on a pistol receiver assembly not equipped with any type of buttstock or device that makes it intended to be fired from the shoulder.
A pistol upper can be used to legally build a short-barreled rifle if the lower receiver is first registered with the ATF as an SBR under the National Firearms Act. This guide covers the steps required to register an SBR.
Q: What's the difference between a 5.56 NATO, .223 Remington, and .223 Wylde upper?
A: 5.56 NATO uppers chamber mil-spec rounds. 223 Remington uppers chamber the commercial equivalent of 5.56 NATO. The .223 Wylde chamber can safely and more accurately chamber both rounds, providing a convenient way to use a wide range of ammo and enjoy better performance at the range.
Want to know more? Read this! What is .223 Wylde?
Q: What lowers are your uppers compatible with?
A: All our AR-15, AR-9, and AR-45 uppers are designed with "mil-spec" fitment. That means they'll fit any standard, mil-spec, forged lower receiver, or any billet lower receiver advertised as having mil-spec compatibility.
Our .308- and 6.5 Creedmoor-caliber uppers are made to fit the more common and commercially available DPMS pattern of lower receivers. They will not fit the original ArmaLite AR-10 lower receiver pattern, which has become a far less common pattern in today's AR market.
Want to know more? Read this! The AR-10 vs. LR-308: What's Different?
Our uppers are also compatible with their corresponding 80% lowers by caliber.
Q: Do your uppers come with a warranty?
A: All upper assemblies come with a Limited Lifetime Warranty covering any manufacturing defects. If, during normal operation, your upper or any of its components become damaged or fail due to a manufacturing defect, contact us for a warrantied exchange.
Note: Normal wear-and-tear is not covered by this Warranty. Examples of normal wear-and-tear include, but are not limited to, barrel throat erosion, rifling wear, corrosion of components from fouling, thinning or loss of protective coatings from normal use, and/or replacement of wear components due to malfunctions after high round counts, such as bolt gas rings or extractors.
Your custom upper 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.
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.