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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10.5″ Slick Side Billet 5.56 Nitride Carbine M-LOK Upper Assembly
Black Rifle Depot
MSRP: $299.95$249.9510.5″ Slick Side Billet 5.56 Nitride Carbine M-LOK Upper Assembly A quality upper assembly without cutting corners. This means starting with a top tier mil-spec forged upper receiver, using a steel gas block as opposed to aluminum, quality American...MSRP: $299.95$249.95 -
Out of stock
14.5″ Pin & Weld 5.56 Mid-length Magpul MOE SL AR15 Upper
Dirty Bird Industries
MSRP: $449.95$429.95Dirty Bird 14.5″ Pin & Weld 5.56 Mid-length Magpul MOE SL AR15 Upper The 14.5″ Mid-length Magpul MOE SL AR 15 upper is a great starting point for your next build. It features a 14.5” barrel chambered in 5.56 NATO that has been...MSRP: $449.95$429.95 -
16" .223 Wylde Gov Mid M-LOK Upper Assembly Black
Black Rifle Depot
MSRP: $329.95$319.9516" .223 Wylde Gov Mid M-LOK Upper Assembly Black The 16" .223 Wylde Gov Mid M-LOK Upper Assembly Black is engineered for reliability and performance without cutting corners. Starting with a top-tier mil-spec forged upper receiver, it features a nitrided...MSRP: $329.95$319.95 -
16″ 5.56 Gov / SOCOM 1:8 Carbine M-LOK Upper Assembly
Black Rifle Depot
MSRP: $324.95$289.9516″ 5.56 Gov / SOCOM 1:8 Carbine M-LOK Upper Assembly A quality upper assembly without cutting corners. This means starting with a top tier mil-spec forged upper receiver, using a nitrided steel gas block as opposed to phosphate or aluminum,...MSRP: $324.95$289.95 -
Aero Precision AR-15 Complete Upper, 10.5" 5.56 Carbine Barrel w/ Pinned FSB, MOE Carbine - FDE
Aero Precision
MSRP: $435.00$376.95Aero Precision AR-15 Complete Upper, 10.5" 5.56 Carbine Barrel w/ Pinned FSB, MOE Carbine - FDE This AR15 Complete Upper features a 10.5" 5.56 Carbine Barrel w/ Pinned FSB Magpul™ MOE® M-LOK® Carbine Handguard Features: Upper: Standard...MSRP: $435.00$376.95 -
Out of stock
Aero Precision M4E1 Threaded Complete Upper, 20" 5.56 Rifle Length Barrel, 15" M-LOK ATLAS S-ONE Handguard - Anodized Black
Aero Precision
MSRP: $675.00$588.95Aero Precision M4E1 Threaded Complete Upper, 20" 5.56 Rifle Length Barrel, 15" M-LOK ATLAS S-ONE Handguard - Anodized Black Made In America?: YesPlatform :AR15Series: ATLASCaliber: 5.56 NATOBarrel Length: 20"Finish: Anodized BlackWeight(s): 61 ozMSRP: $675.00$588.95 -
Aero Precision M4E1 Threaded PRO 13.7" CHF 5.56 M-LOK Midlength Complete Upper
Aero Precision
MSRP: $1,115.00$969.95Aero Precision M4E1 Threaded PRO 13.7" CHF 5.56 M-LOK Midlength Complete Upper The PRO Upper Receiver Group built around our PRO 5.56 Cold Hammer Forged Barrel that is paired with our PRO 5.56 BCG. Included ATLAS R-ONE Handguard, BREACH Charging Handle,...MSRP: $1,115.00$969.95 -
AERO Precision M4E1-T 18" .223 Wylde AR 15 Upper Assembly
Aero Precision
MSRP: $595.00$508.95The AERO Precision M4E1-T Threaded 18" .223 Wylde AR 15 Upper Assembly Black Rifle Depot is proud to offer the AERO Precision M4E1-T Threaded 18" .223 Wylde AR 15 upper that includes their new ATLAS S-ONE Handguard! The S-ONE line...MSRP: $595.00$508.95 -
Black Rain Ordnance 16" 5.56 NATO Complete Upper W/A2 Fixed Sight
Black Rain Ordnance
$599.00Black Rain Ordnance 16" 5.56 NATO Complete Upper W/ A2 Fixed Sight The Black Rain Ordnance 16" 5.56 NATO complete AR 15 upper with fixed front A2 sight comes complete and ready to mount to your lower of choice. These AR 15 complete uppers come with...$599.00 -
Dirty Bird 16" 5.56 NATO Govt M-LOK Upper Assembly V3
Dirty Bird Industries
MSRP: $469.95$439.95Dirty Bird 16" 5.56 NATO Govt M-LOK Upper Assembly V3 This Dirty Bird Industries Complete Upper features a Black Nitride 16" Sub-MOA Government Profile barrel chambered in 5.56 with a 1:7 twist. Built on a top-tier t-marked Forged Upper Receiver and...MSRP: $469.95$439.95 -
Dirty Bird 16″ Government Midlength 5.56 M-LOK Left-Handed Complete Upper
Dirty Bird Industries
MSRP: $584.99$539.95Dirty Bird 16″ Government Midlength 5.56 M-LOK Left-Handed Complete Upper Lefties rejoice, the Dirty Bird 16″ Government Midlength 5.56 M-LOK Left-Handed Complete Upper was built just for you. This is a high quality mil-spec compatible upper...MSRP: $584.99$539.95 -
Geissele URGI CHF Barrel 5.56 Complete Upper Assembly Black/DDC Anodized-MK16 HG
Geissele Automatics
$1,450.00Geissele URGI CHF Barrel 5.56 Complete Upper Assembly Black/DDC Anodized-MK16 HG 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 -
Premium 16″ .223 Wylde Government Midlength Superlight M-LOK Upper Assembly
Black Rifle Depot
MSRP: $349.95$314.95Premium 16″ .223 Wylde Government Midlength Superlight M-LOK Upper Assembly A quality upper assembly without cutting corners. This means starting with a top tier mil-spec forged upper receiver, using a nitrided steel gas block as opposed to...MSRP: $349.95$314.95 -
Out of stock
Sons Of Liberty Gun Works East India Starter Kit 5.56 Barreled Upper w/ FSB - 10.5"
Sons of Liberty Gun Works
$475.00Sons Of Liberty Gun Works East India Starter Kit 5.56 Barreled Upper w/ FSB - 10.5" At Sons of Liberty Gun Works they believe in Quality Mil-Spec or better parts. SOLGW believes there is no substitute for quality and that your gun should be built right...$475.00 -
Out of stock
Sons of Liberty Gun Works EXO3 16" .300 BO Upper
Sons of Liberty Gun Works
MSRP: $750.00$749.95Sons of Liberty Gun Works EXO3 16" .300 BO Complete Upper Sons of Liberty Gun Works believes in Quality Mil-Spec or better parts. They believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use...MSRP: $750.00$749.95 -
Out of stock
12" Aero Precision M4E1 Enhanced Upper Receiver and M-LOK Handguard Combo Gen 2
Aero Precision
MSRP: $278.98$250.9512" Aero Precision M4E1 Enhanced Upper Receiver and M-LOK Handguard Combo Gen 2 Aero Precision M4E1 Enhanced Upper Receiver and M-LOK handguard combo comes with the upper and handguard mounting platform. . Gen 2 Aero handguards include many...MSRP: $278.98$250.95 -
16" M4 Carbine 1:8 M-LOK Upper Assembly - Black
Black Rifle Depot
MSRP: $329.95$249.9516" M4 Carbine 1:8 M-LOK Upper Assembly - Black A quality upper assembly without cutting corners. This means starting with a top tier mil-spec forged upper receiver, using a nitrided steel gas block as opposed to phosphate or aluminum, quality American...MSRP: $329.95$249.95 -
Aero Precision AR-15 10.5″ 5.56 Carbine Complete Upper w/ Pinned FSB, MOE Carbine – Black
Aero Precision
MSRP: $435.00$376.95Aero Precision AR-15 10.5″ 5.56 Carbine Complete Upper w/ Pinned FSB, MOE Carbine – Black Get started on your new AR pistol build with this Aero Precision Barreled Upper Receiver. It features a 10.5” barrel chambered in 5.56 NATO. It...MSRP: $435.00$376.95 -
Out of stock
Aero Precision AR-15 16" 5.56 Carbine Complete Upper w/ Pinned FSB, MOE Carbine - Black
Aero Precision
MSRP: $455.00$395.95Aero Precision AR-15 16" 5.56 Carbine Complete Upper w/ Pinned FSB, MOE Carbine - Black The Aero Precision AR-15 16" 5.56 Carbine Complete Upper is a top-tier component designed for durability and performance. It features a 16" 5...MSRP: $455.00$395.95 -
Aero Precision AR15 20" Rifle 5.56 Complete Upper w/ Pinned FSB & A2 Handguard
Aero Precision
MSRP: $565.00$509.95Aero Precision AR15 20" Rifle 5.56 Complete Upper w/ Pinned FSB & A2 Handguard The Aero Precision AR15 20" Rifle 5.56 Complete Upper is a prime choice for shooters aiming for accuracy and performance. The 20" barrel, crafted for long-range...MSRP: $565.00$509.95 -
Out of stock
Colt EPR 11.5" 5.56 Upper Kit
Colt Manufacturing
$1,299.99Colt EPR 11.5" 5.56 Upper Kit The Colt EPR 11.5" 5.56 Upper Kit is a convenient and practical upper receiver ready to be attached to your AR-15 lower receiver. The kit includes a chrome-lined barrel with a 1-7 twist, a button-rifled barrel, and a...$1,299.99 -
Out of stock
Dirty Bird 20" M16A2 Enhanced AR 15 Retro Upper Assembly - Chrome-Lined
Dirty Bird Industries
MSRP: $679.95$645.95Dirty Bird 20" M16A2 Enhanced AR 15 Retro Upper Assembly Chrome-Lined The Dirty Bird Industries M16A2 20″ 5.56 Retro Upper Assembly is the next iteration in the line of DBI’s popular Complete Uppers. Dirty Bird Industries has sourced...MSRP: $679.95$645.95 -
Out of stockOn Sale
Luth-AR 11.5" Lightweight Complete Upper
Luth-AR
Now: $399.95Was: $424.95Luth-AR 11.5" Lightweight Complete Upper The Luth-AR 11.5" Lightweight AR 15 Complete Upper is the ultimate upgrade for your AR-15 platform. This assembly features an 11.5" 5.56mm lightweight barrel from 4150 Chrome Molly with a 1-9" twist, mated to a...Now: $399.95Was: $424.95 -
Out of stock
Maxim Defense Industries 5.5" PDX Complete 300BLK AR 15 Upper
Maxim Defense Industries
MSRP: $1,295.95$1,165.50Maxim Defense Industries 5.5" PDX Complete 300BLK AR 15 Upper 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 dominate...MSRP: $1,295.95$1,165.50 -
Out of stock
Maxim Defense Industries 5.5" PDX Complete 5.56 NATO AR 15 Upper
Maxim Defense Industries
MSRP: $1,295.95$1,265.95Maxim Defense Industries 5.5" PDX Complete 5.56 NATO AR 15 Upper 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: $1,295.95$1,265.95 -
Out of stockOn Sale
Maxim Defense Industries 5.5" PDX Complete 5.56 NATO AR 15 Upper - FDE
Maxim Defense Industries
Now: $1,165.50Was: $1,295.95Maxim Defense Industries 5.5" PDX Complete 5.56 NATO 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...Now: $1,165.50Was: $1,295.95 -
Out of stockOn Sale
Midwest Industries 16" .223 Wylde Light Weight AR 15 Upper W/15" M-LOK
Midwest Industries
MSRP: $594.95Now: $584.95Was: $594.95Midwest Industries 16" .223 Wylde Light Weight AR 15 Upper W/15" M-LOK This Midwest Industries 16" .223 Wylde Light Weight AR 15 Upper W/15" M-LOK Upper features an M-LOK compatible handguard, M4 feedramps, Melonite finished barrel and Hard...MSRP: $594.95Now: $584.95Was: $594.95 -
Out of stock
Midwest Industries 16" .223 Wylde Lightweight AR 15 Upper
Midwest Industries
$589.95Midwest Industries 16" .223 Wylde Lightweight AR 15 Upper The Midwest Industries 16" .223 Wylde Lightweight AR 15 Upper is a top-of-the-line upgrade for your firearm. Crafted with precision and durability in mind, this forged 7075 T6 aluminum upper...$589.95 -
Out of stock
Sons of Liberty Gun Works 10.5" M4-89 Upper
Sons of Liberty Gun Works
MSRP: $900.00$899.95Sons of Liberty Gun Works 10.5" M4-89 Upper The Sons of Liberty Gun Works 10.5" M4-89 Upper is a top-of-the-line addition to any firearm collection. With precision engineering and exceptional attention to detail, this complete AR 15 upper receiver...MSRP: $900.00$899.95 -
Out of stock
Sons of Liberty Gun Works EXO3 16" 5.56 NATO Upper
Sons of Liberty Gun Works
MSRP: $750.00$749.95Sons of Liberty Gun Works EXO3 16" 5.56 NATO Upper Sons of Liberty Gun Works believes in Quality Mil-Spec or better parts. They believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use right...MSRP: $750.00$749.95 -
Out of stock
Sons of Liberty Gun Works Patrol Complete Upper
Sons of Liberty Gun Works
MSRP: $700.00$689.95Sons of Liberty Gun Works Patrol Complete Upper The Sons of Liberty Gun Works Patrol Complete Upper features a 16" mid-length gas system barrel and a Magpul SL Handguard for optimal performance and versatility. The 16" barrel offers a balance between...MSRP: $700.00$689.95 -
Out of stock
16" Slick Side Billet 5.56 416R Stainless Midlength 1:8 M-LOK Complete Upper
Black Rifle Depot
MSRP: $369.95$329.9516" Slick Side Billet 5.56 416R Stainless Midlength 1:8 M-LOK Complete Upper An affordable AR15 upper assembly that doesn't skimp on quality: this model features a nitrided steel gas block from a reputable American manufacturer instead of aluminum,...MSRP: $369.95$329.95 -
Out of stock
9" Aero Precision M4E1 Enhanced Upper Receiver and M-LOK Handguard Combo Gen 2
Aero Precision
MSRP: $260.98$229.959" Aero Precision M4E1 Enhanced Upper Receiver and M-LOK Handguard Combo Gen 2 Aero Precision M4E1 Enhanced Upper Receiver and M-LOK handguard combo comes with the upper and handguard mounting platform. . Gen 2 Aero handguards include many...MSRP: $260.98$229.95 -
Out of stock
Aero Precision .308 Winchester 16" M5 Upper
Aero Precision
MSRP: $780.00$664.95Aero Precision .308 Winchester 16" M5 Complete Upper The Aero Precision .308 Winchester 16" M5 Upper is a pre-assembled upper receiver designed to fit onto an AR-10 lower receiver and provide a upper assembly for your .308 rifle. It features the S-ONE...MSRP: $780.00$664.95 -
AERO Precision 10.5" AR 15 Upper W/A2 Front Sight - FDE
Aero Precision
MSRP: $435.00$376.95AERO Precision 10.5" AR 15 Upper W/A2 Front Sight - FDE The AERO Precision 10.5" AR 15 Upper with A2 Front Sight in FDE is a versatile and reliable option for your AR-15 build. It features a standard AR15 upper receiver and a 10.5" 5.56 carbine barrel...MSRP: $435.00$376.95 -
Aero Precision M4E1 8" .300 BLK Threaded Complete Upper w/ ATLAS R-ONE 7" M-LOK Handguard - Black
Aero Precision
MSRP: $595.00$517.95Aero Precision M4E1 8" .300 BLK Threaded Complete Upper w/ ATLAS R-ONE 7" M-LOK Handguard - Black This complete upper includes our new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of...MSRP: $595.00$517.95 -
Aero Precision M4E1 Threaded 11.5" 5.56 R-ONE Complete Upper - Anodized Black
Aero Precision
MSRP: $610.00$522.95Aero Precision M4E1 Threaded 11.5" 5.56 R-ONE Complete Upper - Anodized Black This AR complete upper includes our new ATLAS R-ONE Handguard! The R-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your...MSRP: $610.00$522.95 -
Aero Precision M4E1 Threaded Complete Upper, 10.5" 5.56 Barrel, 9" M-LOK ATLAS S-ONE Handguard - FDE Cerakote
Aero Precision
MSRP: $635.00$549.95Aero Precision M4E1 Threaded Complete Upper, 10.5" 5.56 Barrel, 9" M-LOK ATLAS S-ONE Handguard - FDE Cerakote With this complete upper receiver, you can finish your new build with confidence that you can handle any situation or that you're over-equipped...MSRP: $635.00$549.95 -
Out of stock
Aero Precision M4E1-T Threaded 18" 5.56 AR 15 Upper Assembly
Aero Precision
MSRP: $665.00$569.95Aero Precision M4E1-T Threaded 18" 5.56 AR 15 Upper Assembly The AERO Precision M4E1-T 18" 5.56 AR 15 Upper comes with the new ATLAS-S ONE M-LOK Handguard. AERO Precision's ATLAS-S ONE handguard is designed to be lightweight without...MSRP: $665.00$569.95 -
Out of stock
Colt LE6920 Enhanced Complete Upper with Centurion Rail - 5.56 - 16"
Colt Manufacturing
$1,229.95Colt LE6920 Enhanced Complete Upper with Centurion Rail - 5.56 - 16" The Colt LE6920 Enhanced Complete Upper with Centurion Rail is a great option to upgrade your current AR-15 or for your next build. This upper receiver offers a free-floated barrel and...$1,229.95