AR-15 Upper: Complete Upper Assemblies
Get the Best Value for AR-15 Complete Upper Assembly
A complete upper is a full AR-15 upper half that includes the upper receiver, a barrel, a muzzle device, and (optional) bolt carrier group. READ MORE
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HM Defense MONOBLOC 16 Inch Complete 5.56 AR-15 Upper Receiver with 15 Inch M-LOK...
Cost-Effective Complete Upper Receiver for A High-Performance AR-15 Build This HM Defense BUP Complete Upper Receiver features a 16-inch 4150 Chromoly barrel with a patented integrally machined gas block, and... -
New
Primary Weapons Systems MK116 MOD 2-M 16 Inch Complete 5.56 NATO AR-15 Upper Receiver
Long Stroke Piston Upper with Lightweight PicLok Handguard The PWS MK116 MOD 2-M features the PWS Mid-length long-stroke piston system, and includes a unique PicLok handguard, combining Picatinny and M-LOK... -
New
Primary Weapons Systems MK116 MOD 1-M 16 Inch Complete .223 Wylde AR-15 Upper Receiver
Combines Agility & Reliability For A Sleek, Efficient Piston Driven Upper Assembly The PWS MK116 MOD 1-M features the PWS Mid-length long-stroke piston system that combines the agility of the... -
New
Primary Weapons Systems MK116 Pro 16 Inch Complete 5.56 NATO AR-15 Upper Receiver
Perfect Balance of a Cost-Effective Piston System & High-Quality Construction The Primary Weapons Systems MK116 Pro Complete Upper is the perfect balance of a cost-effective piston system and high-quality construction... -
New
2A Armament Palouse-Lite 16 Inch M-LOK 5.56 NATO AR-15 Upper Receiver
Cost Effective, Super Lightweight Upper 2A Armament's Palouse-Lite upper saves on weight dramatically compared to other complete uppers, but still has premium components. The pencil weight barrel is a super... -
New
Black Rain Ordnance SPEC15 16 Inch Complete 5.56 AR-15 Upper Receiver
Complete Your Next Classic Carbine with the SPEC15 Complete Upper Receiver The Black Rain Ordnance SPEC-15 5.56 A2 Complete Upper Receiver is the perfect option for building an M4 style... -
New
Troy A3 16 Inch Complete 5.56 NATO M-LOK Upper Receiver
Troy Complete Complete Upper with Free Float M-LOK Handguard Troy Industries is known for producing equipment made for the pros - and this complete upper is no different. This complete... -
New
Troy A4 16 Inch Complete 5.56 NATO M-LOK Upper Receiver with Backup Sights
Complete Troy Upper with SOCC Handguard and Backup Iron Sights Duty ready with modern features for the pros, the Troy A4 complete upper gives you all the tools you need... -
New
HM Defense MONOBLOC 16 Inch Complete 5.56 AR-15 Upper Receiver with 10 Inch M-LOK...
Cost-Effective Complete Upper Receiver for A High-Performance AR-15 Build This HM Defense BUP Complete Upper Receiver features a 16-inch 4150 Chromoly barrel with an patented integrally machined gas block, and... -
New
Spike’s Tactical Complete AR-15 Upper Receiver with 16 Inch M4 Profile 5.56 NATO FN...
Complete Upper with M4 Profile Hammer Forged FN Barrel Rugged and ready for duty, this complete upper from Spike's Tactical features a cold hammer forged barrel made by FN, with... -
New
Spike’s Tactical Complete AR-15 Upper Receiver with 16 Inch Midlength 5.56 NATO FN Barrel
Complete Upper with Midlength Hammer Forged FN Barrel Rugged and ready for duty, this complete upper from Spike's Tactical features a cold hammer forged barrel made by FN, with a... -
AT3™
AT3™ FF-ML Complete Rifle AR 15 Upper – .223/5.56 16″ Faxon Firearms Barrel –...
Uncompromising quality meets unbeatable value. The AT3 Tactical FF-ML Complete AR-15 Upper, now with a lightweight Faxon Gunner barrel! AT3 Complete Upper assemblies are Built for Accuracy and Reliability -...16 Options -
AT3™
AT3™ FF-ML 10.5 Inch .300 Blackout Pistol Upper for AR-15 – 12″ M-LOK Free...
Uncompromising quality meets unbeatable value - The AT3 10.5" .300 BLK Pistol Upper with SPEAR M-LOK Handguard AT3 Complete Upper assemblies are Built for Accuracy and Reliability - Guaranteed. Quality...8 Options -
AT3™
AT3™ FF-ML 16 Inch .300 BLK Complete AR 15 Upper – .300 AAC Blackout...
Uncompromising quality meets unbeatable value - The AT3 16" .300 BLK Rifle Upper with SPEAR M-LOK Handguard AT3 Complete Upper assemblies are Built for Accuracy and Reliability - Guaranteed. Quality...8 Options -
Radical Firearms 16″ 5.56 NATO Complete AR 15 Upper Receiver with M-LOK Handguard
Complete Budget-Friendly Upper Receiver for 5.56 NATO AR Builds The Radical Firearms 16" 5.56 NATO Complete Upper Receiver is a great way to start your .223/5.56 NATO AR build. It... -
Midwest Industries 16 Inch Complete AR 15 Upper with 14 Inch Combat Rail
Lightweight Upper with Combat-Ready M-LOK Handguard It's no secret that Midwest Industries makes quality components for just about every piece of the AR-15. Compared to your standard upper group, this... -
AT3™
AT3™ FF-ML Complete Match Grade AR 15 Upper – .223 Wylde 16 Inch Faxon...
If you're serious about accuracy, don't settle for less. Get the best value for match-grade shooting with AT3's first .223 Wylde Upper Receiver. AT3 Complete Upper assemblies are Built for...24 Options -
Radical Firearms 16″ .300 Blackout Complete AR 15 Upper Receiver with M-LOK Handguard
Complete Budget-Friendly Upper Receiver for .300 Blackout AR Builds The Radical Firearms 16" .300 Blackout Complete Upper Receiver is a great way to start your .300 Blackout AR build. It... -
Radical Firearms 16″ 6.5 Grendel AR 15 Complete Upper Receiver with M-LOK Handguard
Complete Budget-Friendly Upper Receiver for 6.5 Grendel AR Builds The Radical Firearms 16" 6.5 Grendel Complete Upper Receiver is a great way to start your 6.5 Grendel AR build. It... -
Midwest Industries 16 Inch Complete AR 15 Upper with 15 Inch Combat Rail
Lightweight Upper with Combat-Ready M-LOK Handguard It's no secret that Midwest Industries makes quality components for just about every piece of the AR-15. Compared to your standard upper group, this... -
Radical Firearms 16″ 7.62×39 Complete Upper Receiver with M-LOK Handguard
Complete Budget-Friendly Upper Receiver for 7.62mm AR Builds The Radical Firearms 16" 7.62x39 Complete Upper Receiver is a great way to start your 7.62mm AR build. It is an outstanding... -
New
Sons of Liberty Gun Works M4-EXO3 13.7 Inch Pinned and Welded Complete 5.56 NATO...
SOLGW Complete Upper with EXO3 Handguard and NOX Flash Hider This complete AR-15 upper has a more economical price, with all the great components that really matter. This complete upper...Only$807.50 -
New
Black Rain Ordnance .458 SOCOM 16 Inch Complete AR-15 Upper Receiver
High-Performance Complete Upper For Large-Caliber 458 SOCOM builds This Black Rain Ordnance AR-15 Complete Upper Receiver features everything you need to build a high-performance .458 SOCOM build. Includes a 16-inch...Only$899.00 -
New
Sons of Liberty Gun Works M4-76 16 Inch Complete 5.56 NATO Upper Receiver
SOLGW Complete Upper with M76 Wedge Lock Handguard This Sons of Liberty Gun Works upper is a great starting point for complete customization. It comes equipped with a 16 inch...Only$855.00
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