80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states.
INCREDIBLY PRECISE
We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum.
RIDICULOUSLY EASY
We also offer our patented AR-15 and .308 Easy Jigs® which is the first 80% lower jig that makes it ridiculously easy for a non-machinist to finish their 80% lower in under 1 hour with no drill press required.
100% SATISFACTION GUARANTEED
Products manufactured by 80% Arms carry a lifetime warranty against manufacturing defects. We will promptly replace or repair any product that we determine to be defective.
AR Upper Receivers | Complete AR15, AR10 & AR9 Uppers
Upgrade, customize, or finish your rifle build with our premium AR upper receivers. Whether you’re building a new AR or upgrading your current rifle, our complete AR15 uppers and AR10 uppers are designed for reliable performance and a perfect fit with your compatible lower receiver.
What Is an Upper Receiver?
An AR upper receiver is the top half of your AR platform rifle and contains the critical components that make your firearm function. Depending on the configuration, it can include the barrel, bolt carrier group (BCG), charging handle, handguard, and muzzle device.
Pairing the right upper with your lower determines your rifle’s caliber, barrel length, and performance. Swapping uppers is one of the easiest ways to customize your AR or experiment with new calibers without purchasing a completely new firearm.
Complete AR Uppers for Every Build
We offer complete AR upper receivers in multiple calibers and configurations, perfect for:
AR15 Uppers: 5.56 NATO / .223 Wylde, .300 Blackout
AR9 Uppers: 9mm pistol-caliber carbines
AR10 Uppers: .308 WIN and 6.5 Creedmoor for long-range precision
Every upper is ready to mount to your lower receiver, making it easy to finish your build or upgrade your current rifle.
Custom Options to Match Your Build
Our upper receivers come in a variety of configurations to fit your shooting style:
Barrel Lengths: From compact pistol-length to full-size rifle builds
Handguards: M-LOK, KeyMod, and quad rails for optics and accessories
Muzzle Devices: Flash hiders, compensators, and threaded options for suppressors
Why Choose Our AR Upper Receivers?
Compatible with most AR15, AR10, and AR9 lower receivers
Multiple caliber and configuration options to fit any purpose
High-quality parts for reliability and long-term performance
Easy way to finish your 80% lower or upgrade an existing build
Whether you’re starting a new project or improving your current AR, our upper receivers give you the flexibility to create the exact rifle you want.
Shop AR Upper Receivers today and complete your AR build with confidence.
Whatever upper you choose, you can be sure you’ll be on target. Need help deciding? Want a complete build kit instead? We wrote a few articles to help you!
BUILD AT HOME
INCREDIBLY PRECISE
RIDICULOUSLY EASY
100% SATISFACTION GUARANTEED
