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So you’re interested in building your own AR-15, and you’ve even gone so far as to build the whole bottom half. But you can’t quite see yourself ready to undertake putting together the top half. Well, how are you with a screwdriver and installing sights? Because if you can do that, we’ll build the whole…
Side-Charging .223 Wylde Upper Assembly with 16″ Parkerized Barrel and 15″ M-LOK Handguard Want a ready-to-run side-charging AR-15 upper without sourcing and assembling every part yourself? This one arrives fully built. At its core is a 16″ M4-profile barrel in 4150 chrome moly vanadium steel with a 1:7 twist and a .223 Wylde chamber. The…
Optimized for subsonic accuracy. Featuring a 7.5″ heavy barrel with a 1:8 twist rate, this 300 Blackout AR-15 upper provides the perfect combination of parts and specifications to ensure all subsonic loads are stabilized for maximum accuracy. Included is an upgraded, custom billet upper with a side-charging bolt carrier group for improved ergonomics. What’s Included…
Please note: We strive to provide the most accurate photographs of our product wherever possible. Due to availability limitations and supply chain constraints, slight variations of the handguard of this upper assembly may occur in the aesthetics of the skeletonizations in between the M-LOK sections. For the longrange shooter who demands a do-it-all AR with…
So half-way done with building your own AR-15. You’ve gotten as far as building the bottom half, and you’re now ready to tackle your upper assembly. Think of it this way: you’re not half-way done, you’re damn near completely done. Because if you can turn a screwdriver, allen wrench, or socket wrench to install backup…
Precision meets value in this stainless steel 5.56 NATO complete upper. This AR-15 Complete Upper is a high-value, “ready-to-run” solution for your next AR-15 build or upgrade. Chambered in 5.56 NATO, this assembly features a 16-inch M4 contour barrel crafted from 416R Stainless Steel, offering a sleek look with enhanced corrosion resistance and precision. The…
Engineered for precision and power, this 7.62×39 AR-15 upper combines a heavy barrel with the 7.62×39 cartridge, offering superior performance long missing from other rifles. Built around a 16″, 1:10-twist, heavy barrel housed within a custom free-float M-LOK handguard, this upper offers tighter shot groups and improved heat resistance during rapid fire. This upper features…
Tungsten Cerakote 7.62×39 AR-15 Upper with 16″ Heavy Barrel and 15″ Talon M-LOK Handguard Want to shoot 7.62×39 without switching platforms? This upper puts the classic AK cartridge on your AR-15 lower, and its 16″ heavy-profile barrel stands up to long strings of fire while keeping your groups consistent. The handguard and forged upper receiver…
Ergonomic performance meets compact power in this side-charging 5.56 NATO complete upper. This AR-15 Complete Upper is a high-value, “ready-to-run” solution for your next AR pistol or short-barreled rifle (SBR) build. Chambered in 5.56 NATO, this assembly features a 10.5-inch M4 contour barrel crafted from heavy-duty 4150 Chrome Moly Vanadium steel, offering exceptional longevity and…
Some people love classic things. Some of those classic-loving people love classic firearms. You know the type. They can list every good thing about the 1911 in alphabetical order, or tell ya all about how the M-16 used to “jam like a sumbitch.” They might even have personal experience on the matter. If you’re the…
Every AR15 upper we sell is professionally assembled, carefully inspected, and ready to fire out of the box with maximum accuracy and reliability.
We source barrels of various lengths to offer the most popular rifle and pistol configurations that shooters are looking for. Build an ultra-compact AR or SBR with one of our pistol-barreled uppers, or stick to maximizing velocity and accuracy downrange with a rifle-barreled option.
We promise absolute performance by only offering the best barrels. Every upper is fixed with a 4150 CroMoV (mil-spec) barrel for maximum life expectancy and heat resistance, or a 416R Crucible stainless steel barrel that offers precision rifling with sub-MOA accuracy.
Forged, Billet & Side-Charge Receivers
Some AR builders prefer standard forged, mil-spec units. Others want new features. So we’ve sourced uppers that offer both options. Pick a forged M4-type receiver, or go with a billet or side-charging receiver that’s ergonomic.
We’ve got you covered! Use our helpful how-to guides to pick an upper with the right specifications, and complete your custom AR build:
How to Build an AR-15: The Beginner’s Guide
The Guide to AR-15 Barrels and Twist Rates
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.
