AR-15 Complete Uppers
Introduction to AR-15 Complete Uppers
If you're looking to construct a no-nonsense AR-15 that you know will work when it counts, purchasing either a complete rifle or an Ar-15 complete uppers from Black Rifle Depot is often the way to go. Buying direct from Black Rifle Depot ensures that all assembly, troubleshooting, and quality control are handled before the firearm reaches you—all covered by a manufacturer’s warranty and built to industry standards, ensuring reliability.
What is an AR15 Complete Upper?
AR-15 complete uppers come pre-assembled with all of the essential components needed to complete the upper portion of your rifle, including the barrel, handguard, gas system, and often the bolt carrier group and charging handle. These assemblies fit seamlessly with any standard AR-15 lower receiver you already have, allowing for easy customization and upgrades. You’re essentially building your own rifle in two simple parts – an upper and a lower. Opting for a complete upper totally eliminates the complexities and potential pitfalls of assembling an upper receiver part by part, saving you time and ensuring all components function harmoniously. Installing your new complete upper is as easy as popping two pins on your lower in and out.
Key Features to Consider
As you dive into our collection of uppers at Black Rifle Depot, there are a few key areas you should be thinking about. The beauty of the AR-15 is that the configurations available to you are almost endless. Unfortunately, this wealth of possibilities can also make shopping for a complete upper overwhelming. No worries, let's break down some main areas of focus as you determine the right upper for you.
Barrel Length and Material:
This is perhaps the most important question as you begin your journey to create your ideal AR. AR-15 complete uppers are available in various barrel lengths, typically 16", 18", and 20". As you consider purchasing a complete upper, remember shorter barrels offer maneuverability, while longer barrels somewhat enhance accuracy and velocity at extended ranges. As for what a barrel is made of, stainless steel provides corrosion resistance, whereas chrome-moly barrels are valued for their robustness. Several factors influence accuracy, including quality, chambering, and the ammo you go with. With all that said, if you're building your first rifle, you can't go wrong with a 16" at a price point that works for you.
Gas System:
The gas system is crucial to the AR-15's operation, with direct impingement and piston systems being the most common. As you consider purchasing a complete upper, note that direct impingement systems are standard and lightweight, while piston systems offer cleaner operation and reliability under adverse conditions. Most of the uppers you find at Black Rifle Depot operate using the classic direct impingement system, which we believe is the best approach for almost all shooters.
Chambering and Twist Rate:
Popular chamberings include 5.56 NATO, 300 Blackout and .223 Wylde. As you consider purchasing a complete upper, the twist rate, indicating how many inches it takes for the rifling to complete one full rotation, affects bullet stabilization. Common twist rates like 1:7, 1:8, and 1:9 suit different bullet weights and applications. For most, a 1:7 twist is a good place to start.
Reputation Matters:
Selecting a complete upper from reputable manufacturers such as Strike Industries, aero precision, Dirty Bird Industries and Blackrifledepot ensures quality and reliability. As you consider purchasing a complete upper, remember that craftsmanship and performance. If you see a lower that is dramatically more expensive, there is probably a reason, with corners being cut somewhere in the process. It never hurts to follow the old adage, “buy once, cry once.”
Durability and Reliability:
Durability is crucial, and AR-15 uppers are built to withstand rigorous use. As you consider purchasing a complete upper, note that corrosion-resistant coatings, robust materials, and high-quality manufacturing processes contribute to the longevity and reliability of the upper receiver.
Value Proposition
At Black Rifle Depot, the convenience of a pre-assembled upper, combined with the baked-in assurance of quality and performance, justifies the price. At Black Rifle Depot, you can have total confidence in any of the uppers we carry, which are from renowned names such as Aero Precision, Battle Arms Development, Colt, CMMG, Faxon, Foxtrot Mike, Dirty Bird, Geissele, Spikes Tactical, and Sons of Liberty. By choosing one of these AR-15 complete uppers from a trusted manufacturer, you get a dependable, high-performing rifle that meets your specific needs, whether for tactical use, competitive shooting, or hunting.
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Out of stock
Aero Precision M4E1-T Complete Upper, 16" .223 Wylde SS Barrel, 15" M-LOK ATLAS S-ONE HG - Anodized
Aero Precision
MSRP: $575.00$493.95Aero Precision M4E1-T Complete Upper, 16" .223 Wylde SS Barrel, 15" M-LOK ATLAS S-ONE HG - Anodized This complete upper includes our new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect...MSRP: $575.00$493.95 -
Aero Precision M4E1-T Complete Upper, 16" .300 Blackout Barrel, 12" M-LOK ATLAS S-ONE HG - Anodized Black
Aero Precision
MSRP: $550.00$480.95Aero Precision M4E1-T Complete Upper, 16" .300 Blackout Barrel, 12" M-LOK ATLAS S-ONE HG - Anodized Black This complete upper includes our new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the...MSRP: $550.00$480.95 -
Aero Precision M4E1-T Complete Upper, 16" .300 Blackout Barrel, 15" M-LOK ATLAS S-ONE HG - Anodized Black
Aero Precision
MSRP: $660.00$573.95Aero Precision M4E1-T Complete Upper, 16" .300 Blackout Barrel, 15" M-LOK ATLAS S-ONE HG - Anodized Black This AERO Precision Complete Upper is equipped with the new ATLAS S-ONE Handguard, part of our S-ONE line that emphasizes size reduction and weight...MSRP: $660.00$573.95 -
Out of stock
Aero Precision M5 Complete Upper, 24" 6.5 CM SS Fluted BRL ATLAS S-ONE 15" M-LOK HG - FDE Cerakote
Aero Precision
MSRP: $975.00$830.95Aero Precision M5 Complete Upper, 24" 6.5 CM SS Fluted BRL ATLAS S-ONE 15" M-LOK HG - FDE Cerakote This 6.5 Creedmoor upper is an easy upgrade to your existing or new build M5/308 AR. Utilizing all compatible parts with the exception of the barrel, you...MSRP: $975.00$830.95 -
Out of stock
Aero PrecisionEPC-9 Threaded 8.3" 9mm Complete Upper Receiver w/ ATLAS S-ONE 7.3" Handguard - FDE Cerakote
Aero Precision
MSRP: $550.00$470.95Aero PrecisionEPC-9 Threaded 8.3" 9mm Complete Upper Receiver w/ ATLAS S-ONE 7.3" Handguard - FDE Cerakote Introducing the Aero Precision EPC-9 Threaded 8.3" 9mm Complete Upper Receiver with ATLAS S-ONE 7.3" Handguard in FDE Cerakote, a premium choice...MSRP: $550.00$470.95 -
Out of stock
Aero PrecisionM4E1 Threaded Complete Upper 8" .300 Blackout Barrel ATLAS R-ONE 7" M-LOK HG - FDE Cerakote
Aero Precision
MSRP: $635.00$541.95Aero Precision M4E1 Threaded Complete Upper 8" .300 Blackout Barrel ATLAS R-ONE 7" M-LOK HG - FDE Cerakote The Aero Precision M4E1 Threaded Complete Upper features the innovative ATLAS R-ONE Handguard. Designed to focus on reducing size and...MSRP: $635.00$541.95 -
Ballistic Advantage AR-15 Complete Upper, 16" 5.56 Hanson Midlength Barrel w/15" Logic M-LOK Handguard
Ballistic Advantage
$539.00Ballistic Advantage AR-15 Complete Upper, 16" 5.56 Hanson Midlength Barrel w/15" Logic M-LOK Handguard Ballistic Advantage is known for making high-quality AR parts. Their 16" 5.56 Hanson Mid-Length Complete Upper Assembly is an excellent option for...$539.00 -
Battle Arms Workhorse 10.5" 223 Wylde Upper Assembly (No BCG No CH)
Battle Arms Development
MSRP: $529.99$499.99Battle Arms Workhorse 10.5" 223 Wylde Upper Assembly (No BCG No CH) Specifications: Barrel Length: 10.5in Gas System: Carbine Barrel Profile: A2 Barrel Steel: 4150 Chrome-Moly Vanadium Barrel Finish: Nitride Chrome Lining: None Muzzle Thread:...MSRP: $529.99$499.99 -
Battle Arms Workhorse 16" 5.56 Nato Upper Assembly (No BCG No CH)
Battle Arms Development
MSRP: $529.99$499.99Battle Arms Workhorse 16" 5.56 Nato Upper Assembly (No BCG No CH) Specifications: Barrel Length: 16in Gas System: Midlength Barrel Profile: A2 Barrel Steel: 4150 Chrome-Moly Vanadium Barrel Finish: Nitride Chrome Lining: None Muzzle Thread:...MSRP: $529.99$499.99 -
Out of stock
Daniel Defense DDM4V7 AR 15 Complete Upper
Daniel Defense
$1,214.00Daniel Defense DDM4V7 AR 15 Complete Upper The Daniel Defense M4 V7 Upper Receiver Group is built around a Cold Hammer Forged 16" Government profile barrel and equipped with a DD improved Flash Suppressor to reduce flash signature. It features a...$1,214.00 -
Dirty Bird 10.5″ Government Carbine 5.56 M-LOK Upper Assembly
Dirty Bird Industries
MSRP: $444.95 - $464.95$400.95 - $418.95This Dirty Bird Industries Complete Upper features a Black Nitride 10.5” Government Profile barrel chambered in 5.56 with a 1:7 twist. Built on a top-tier Forged Upper Receiver and finished with Dirty Bird’s 9.7" SMRS M-LOK V2 or V3 Handguard...MSRP: $444.95 - $464.95$400.95 - $418.95 -
Dirty Bird 16″ RECCE V2 .223 Wylde M-LOK Upper Assembly
Dirty Bird Industries
MSRP: $749.99 - $799.99$674.99 - $719.99Dirty Bird 16″ RECCE V2 .223 Wylde M-LOK Upper Assembly The Dirty Bird RECCE V2 Upper Assembly is the latest evolution of our popular 16" SMRS Upper Assembly. This upper is built to withstand extreme hard use while maintaining...MSRP: $749.99 - $799.99$674.99 - $719.99 -
Dirty Bird 16" Side-Charging 5.56 NATO Govt M-LOK Complete Upper
Dirty Bird Industries
$699.95Dirty Bird 16" Side-Charging 5.56 NATO Govt M-LOK Complete Upper This Dirty Bird Industries 9mm Complete Upper features a Side-Charging upper receiver and pairs it with one of the best-selling 15″ Dirty Bird SMRS M-LOK Handguards. NEW: The...$699.95 -
Out of stock
Dirty Bird 16″ SPR 6mm ARC Stainless Midlength M-LOK Complete Upper
Dirty Bird Industries
MSRP: $554.99$529.95Dirty Bird 16″ SPR 6mm ARC Stainless Midlength M-LOK Complete Upper 6mm ARC is quickly becoming one of the most versatile rounds for the AR-15. With better ballistic coefficients and velocity than 5.56 and .223 and a flatter shooting experience...MSRP: $554.99$529.95 -
Dirty Bird 20" Lightweight .22-250 Rifle Stainless Steel Slick-Side M-LOK Complete Upper
Dirty Bird Industries
$799.95Dirty Bird 20" Lightweight .22-250 Rifle Stainless Steel Slick-Side M-LOK Complete Upper The Dirty Bird 20" .22-250 Complete Upper is a great building block for your next tack driver build! .22-250 is a high-velocity round that is not only...$799.95 -
Dirty Bird Industries 7.5″ 5.56 DRP Pistol M-LOK V2 Upper Assembly
Dirty Bird Industries
$409.95Dirty Bird Industries 7.5″ 5.56 DRP Pistol M-LOK V2 Upper Assembly This Dirty Bird Industries Complete Upper features a Black Nitride 7.5” Sub-MOA DRP Profile barrel chambered in 5.56 with a 1:7 twist. Built on a top-tier t-marked...$409.95 -
Dirty Bird Slick-Side 16" 9mm 1:10 M-LOK Complete Upper
Dirty Bird Industries
$499.95Dirty Bird Slick-Side 16" 9mm 1:10 M-LOK Complete Upper This Dirty Bird Industries 9mm Complete Upper features a PCC (Pistol Caliber Carbine) upper receiver with a Last Round Bolt Hold Open (LRBHO) mechanism and pairs it with one of the best-selling...$499.95 -
Faxon ARAK-21 12.5” 5.56 Complete Upper
Faxon Firearms
$1,199.00Faxon ARAK-21 12.5” 5.56 Complete Upper The ARAK-21® is a gas piston actuated, complete upper receiver assembly designed to seamlessly interface with the standard AR-15 platform. The total extent of the interface is simply the...$1,199.00 -
Faxon ARAK-21 16” 5.56 Ambidextrous Piston Complete Upper
Faxon Firearms
$1,199.00Faxon ARAK-21 16” 5.56 Ambidextrous Piston Complete Upper The ARAK-21® is a gas piston actuated, complete upper receiver assembly designed to seamlessly interface with the standard AR-15 platform. The total extent of the...$1,199.00 -
Out of stock
Faxon Firearms ION Ultralight 16" 5.56 Barrel Complete Upper Receiver
Faxon Firearms
MSRP: $1,099.00$1,011.95Faxon Firearms ION Ultralight 16" 5.56 Barrel Complete Upper Receiver FX5500-U features our 14.5" Pencil Barrel with Integral Slim 3-Port Muzzle Brake which meets the NFA 16" minimum barrel length requirement, 13” Streamline Carbon Fiber Handguard,...MSRP: $1,099.00$1,011.95 -
Foxtrot Mike .223 Wylde Gov Mid M-LOK Complete Upper
Foxtrot Mike
$539.00 - $629.00Foxtrot Mike .223 Wylde Gov Mid M-LOK Complete Upper The Foxtrot Mike .223 Wylde Gov Mid M-LOK Complete Upper is a top-tier component designed for firearm enthusiasts who demand precision and versatility. Crafted for compatibility with AR-15 platforms,...$539.00 - $629.00 -
Foxtrot Mike 16" 9mm Front Charging Complete Upper w/ 4-Port Micro Brake
Foxtrot Mike
$499.99Foxtrot Mike 16" 9mm Front Charging Complete Upper w/ 4-Port Micro Brake The Foxtrot Mike Products MIKE-9 Complete 9x19mm Upper Receiver is built from the ground up to provideoutstanding reliability and accuracy with a host of top tier features...$499.99 -
On Sale
Foxtrot Mike 16" Rear Charging .45 AR-15 Complete Upper, 15" Handguard, CA Compliant Brake, Includes BCG
Foxtrot Mike Products
Now: $479.95Was: $499.95Now: $479.95Was: $499.95 -
Foxtrot Mike 16" Rear Charging 9mm Complete Upper w/ 4-Port Micro Brake
Foxtrot Mike
MSRP: $499.95$479.95Foxtrot Mike 16" Rear Charging 9mm Complete Upper w/ 4-Port Micro Brake This amazing 16" complete upper from Foxtrot Mike has all of the expensive features and high-quality workmanship that FM Products is quickly becoming famous for, but at a price tag...MSRP: $499.95$479.95 -
Foxtrot Mike Products 16" Forward Charging .45 AR-15 Complete Upper
Foxtrot Mike
$489.00Foxtrot Mike Products 16" Forward Charging .45 AR-15 Complete Upper The Foxtrot Mike Products FM-9 Complete .45 AR-15 Upper Receiver is built from the ground up to provide outstanding reliability and accuracy with a host of top tier features. The...$489.00 -
Foxtrot Mike Products 16″ Forward Charging 45 ACP AR-15 Complete Upper
Foxtrot Mike
$439.99Foxtrot Mike Products 16″ Forward Charging 45 ACP AR-15 Complete Upper The Foxtrot Mike Products .45 ACP Upper Receiver comes fully assembled and ready to drop on any pistol caliber lower receiver that uses Glock®magazines. With its...$439.99 -
Out of stock
Foxtrot Mike Products 16" Forward Charging 9mm AR-15 Complete Upper
Foxtrot Mike
$489.00Foxtrot Mike Products 16" Forward Charging 9mm AR-15 Complete Upper The Foxtrot Mike Products FM-9 Complete 9mm AR-15 Upper Receiver is built from the ground up to provide outstanding reliability and accuracy with a host of top tier features. The...$489.00 -
Out of stock
Foxtrot Mike Products 16" Rear Charging .45 AR-15 Complete Upper
Foxtrot Mike
$489.00Foxtrot Mike Products 16" Rear Charging .45 AR-15 Complete Upper The Foxtrot Mike Products Complete .45 AR upper is the package you have been waiting for to finish your Glock mag AR-45 build. This .45 upper receiver comes with all the features...$489.00 -
Foxtrot Mike Products 5" Rear Charging .45 AR-15 Complete Upper
Foxtrot Mike
MSRP: $349.00$329.00Foxtrot Mike Products 5" Rear Charging .45 AR-15 Complete Upper The Foxtrot Mike Products Complete .45 AR-15 upper is the package you have been waiting for to finish your Glock mag AR-45 build. This .45 upper receiver comes with all the...MSRP: $349.00$329.00 -
Out of stock
Foxtrot Mike Products 5" Rear Charging 9mm AR-15 Complete Upper
Foxtrot Mike
$349.00Foxtrot Mike Products 5" Rear Charging 9mm AR-15 Complete Upper The Foxtrot Mike Products Complete 9mm AR-15 upper is the package you have been waiting for to finish your Glock mag AR-9 build. This 9mm upper receiver comes with all the features you want...$349.00 -
Out of stock
Geissele Automatics Duty AR-15 Complete Upper Receiver Carbine - Black - 10.3"
Geissele Automatics
$1,260.00Geissele Automatics Duty AR-15 Complete Upper Receiver Carbine - Black - 10.3" The Geissele Super Duty Upper (Complete) features the latest in weapon technology available exclusively from Geissele Automatics. This 10.3” complete upper chambered in...$1,260.00 -
Geissele Automatics Duty AR-15 Complete Upper Receiver Carbine - DDC - 10.3"
Geissele Automatics
$1,410.00Geissele Automatics Duty AR-15 Complete Upper Receiver Carbine - DDC - 10.3" The Geissele Super Duty Upper (Complete) features the latest in weapon technology available exclusively from Geissele Automatics. This 10.3” complete upper chambered in 5...$1,410.00 -
Out of stock
Geissele Automatics Duty AR-15 Complete Upper Receiver Mid-length - OD Green - 16"
Geissele Automatics
$1,410.00Geissele Automatics Duty AR-15 Complete Upper Receiver Mid-length - OD Green - 16" The Geissele Super Duty Upper (Complete) features the latest in weapon technology available exclusively from Geissele Automatics. This 16” complete upper chambered...$1,410.00 -
Geissele Automatics Super Duty MOD1 AR-15 Complete Upper Receiver Mid-length - DDC - 16"
Geissele Automatics
$1,410.00Geissele Automatics Super Duty MOD1 AR-15 Complete Upper Receiver Mid-length - DDC - 16" The Geissele Super Duty Upper (Complete) features the latest in weapon technology available exclusively from Geissele Automatics. This 16” complete upper...$1,410.00 -
Geissele Automatics USASOC URG-I Near Clone AR-15 Pistol Upper Receiver Assembly
Geissele Automatics
$1,450.00Geissele Automatics USASOC URG-I Near Clone AR-15 Pistol Upper Receiver Assembly For more than 50 years the famed silhouette of the M16/M4 has only had one major and several minor changes. Barrel lengths and buttstocks have changed, but more or less the...$1,450.00 -
Out of stock
LUTH-AR 16" Lightweight AR 15 .223 Remington Complete Upper
Luth-AR
MSRP: $439.95$429.95LUTH-AR 16" Lightweight AR 15 .223 Remington Complete Upper The Luth-AR 16" Lightweight AR 15 Complete Upper in .223 Remington delivers top-tier performance wrapped in a sleek design. Starting with a 16", 223 Remington lightweight barrel, this assembly...MSRP: $439.95$429.95 -
Out of stock
Maxim Defense Industries 5.5" PDX Complete 300BLK AR 15 Upper - FDE
Maxim Defense Industries
MSRP: $1,295.00$1,284.95Maxim Defense Industries 5.5" PDX Complete 300BLK AR 15 Upper - FDE The NEW Maxim Defense PDX(TM) U.R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any Mil-Spec lower receiver. With the PDX(TM) U.R.G, you...MSRP: $1,295.00$1,284.95 -
Out of stock
Midwest Industries 10.5" AR 15 Pistol Upper
Midwest Industries
$599.95Midwest Industries 10.5" AR 15 Pistol Upper This Midwest Industries 10.5" AR 15 Pistol Upper features an M-LOK compatible handguard, M4 feedramps, Melonite finished barrel and Hard Coat Anodizing. Features: 7075 T6 Aluminum M-LOK Handguard M4...$599.95 -
Premium 16" .223 Wylde Gov Mid M-LOK Complete Upper
Black Rifle Depot
MSRP: $599.95$399.95Premium 16" .223 Wylde Gov Mid M-LOK Complete Upper We wanted to build an affordable upper assembly without cutting corners. This means using a nitrided steel gas block from an American Manufacturer as opposed to aluminum, quality American Made...MSRP: $599.95$399.95 -
Premium Series 16″ 5.56 Upper Assembly w/ Rosco Barrel and Geissele MK14
Black Rifle Depot
$549.95Premium Series 16″ 5.56 Upper Assembly w/ Rosco Barrel and Geissele MK14 Built on a top tier 7075 forged upper receiver and fitted with the popular 16″ Bloodline Midlength Nitride Barrel from Rosco Manufacturing, this premium barreled upper...$549.95