Your Browser is OutdatedAR15 Upper Receivers from Aero Precision, Geissele, Daniel Defense & Other Top Brands — 1,187 products / 2,959 models — Page 1
We have complete AR15 upper receivers for sale that include barrels, buttstocks, buffers, spring tubes, and the correct gun parts kits for installation on your lower receiver. Whether you're building a brand new rifle or customizing an existing AR, we've got the best AR15 upper to meet your needs. We have tons of top calibers in-stock, from 5.56 NATO and .300 AAC Blackout to AR pistol upper calibers like 9mm. Some shoppers buy multiple different AR uppers all at once to give themselves variety and versatility for their AR rifles or AR pistols without needing to uninstall and reinstall key components and optics. Whether you need a stripped upper receiver to customize your build from the bottom up or need a complete AR upper for quick set up, we carry Aero Precision AR15 Upper Receivers, Geissele AR15 Upper Receivers, Daniel Defense AR15 Upper Receivers, and tons of other high-quality AR15 parts and accessories from top brands in the industry to enhance your build.
What Is a Good AR15 Upper Receiver?
The best AR15 Upper Receiver for you depends on your needs and preferences. However, here are some things to look for while browsing:
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Material: AR Uppers are typically made from aluminum or polymer. Aluminum is more durable, but also heavier. Polymer is lightweight, but may not be as durable.
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Barrel: The barrel is the most important component of an AR15 upper. The barrel length and caliber are the primary factors that determine how your AR15 is best used, so pick an upper that is designed for your specific needs.
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Bolt carrier group: The bolt carrier group, or BCG, is the part of the upper receiver that houses the bolt, which is responsible for loading and firing the rounds. Look for a high-quality bolt carrier group that is properly staked and has a chrome-lined interior.
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Charging handle: The charging handle is used to charge the rifle and make it ready to fire. Look for a charging handle that is easy to grip and operate. Choose an ambidextrous charging handle if you want to manipulate it with either hand in the field. We also carry side charging AR15 uppers that allow you to rack the action without losing your cheek weld or grip.
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Gas system: Gas systems move the hot gas from the fired round away from the chamber, helping reduce recoil and chamber the next round. It is important to match the gas system to the intended use of the rifle.
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Compatibility: Make sure the upper receiver is compatible with the lower receiver and other components of the rifle.
Can You Still Buy AR15 Uppers?
Yes, buying an upper receiver for an AR15 does not require an FFL (Federal Firearms License), so you can legally purchase it online. This goes for AR pistol uppers, complete upper receivers, and stripped AR uppers. Of course, always refer to your local and state laws, as some areas may not allow such purchases.
Buy AR15 Upper Receivers Online at OpticsPlanet
Find the best AR15, AR10, or 9mm upper receiver right here at OpticsPlanet.com. There are so many reasons to shop online with us, including our competitive pricing. You can find our massive selection online or on our top-rated mobile app. As always, most orders over $49 get Free Shipping! We have a wide variety of in-house experts on a variety of topics, including shooting sports, so head on over and check out our AR-15 How-to Guides to learn more about building and buying the best AR15 upper for your needs and budget.
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