AR-15 Complete Upper Assemblies

Quickly Change Between Calibers & Lengths with Complete AR-15 Upper Receivers
A complete upper for an AR15 can be put on almost any AR15 lower receiver. Because it is the complete upper half of the rifle, all you need is a built out lower receiver and you will have a fully READ MORE

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AT3™ 16 Inch .300 BLK Complete AR-15 Upper - .300 AAC Blackout 16 Inch Ballistic Advantage Barrel - With Nickel Boron BCG and Mil-Spec CH

AT3™ .300 BLK 16″ Complete Assembled AR-15 Upper – With Nickel Boron BCG and Charging Handle

Sale!

AT3™ 10.5 Inch .300 Blackout Pistol Upper for AR-15 - With Nickel Boron BCG and Mil-Spec CH

AT3™ 10.5 Inch .300 Blackout Complete Assembled Pistol Upper for AR-15 – With Nickel Boron BCG and Mil-Spec CH

DAILY DEAL

AT3™ 22LR 16″ Assembled Upper – 2A Basics ASAL 15" Handguard – with BCG/Charging Handle

AT3™ 22LR 16″ Assembled Upper – 2A Basics ASAL 15″ Handguard – with BCG/Charging Handle

Save 15%

DAILY DEAL

AT3™ 22LR 16″ Assembled Upper – 2A Basics ASAL 15" Handguard – with BCG/Charging Handle/Magazine

AT3™ 22LR 16″ Assembled Upper – 2A Basics ASAL 15″ Handguard – with BCG/Charging Handle/Magazine

Save 15%

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AT3™ 10.5 Inch Complete AR-15 Pistol Upper - 10.5 Inch Faxon .223/5.56 SOCOM Barrel - With Nickel Boron BCG and Mil-Spec CH

AT3™ .223/5.56 10.5″ Complete Assembled AR-15 Upper – With Nickel Boron BCG and Charging Handle

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AT3 Tactical 10.5 Inch 300 BLK Complete AR-15 Upper Assembly - No BCG or Charging Handle

(13)

AT3™ 10.5 Inch .300 Blackout Assembled Pistol Upper for AR-15 – No BCG/CH

STNGR Complete AR-15 Upper Receiver with 16 Inch Barrel, BCG and Charging Handle - HWK Handguard, Black

(2)

STNGR 16″ .223 Wylde Complete Assembled Upper Receiver w/ 15″ HWK® Handguard, BCG & CH

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AT3 Tactical Rifle Kit with Lightweight Barrel FDE

(7)

AT3™ Complete M-LOK AR-15 Rifle Kit with 16 Inch Pencil Barrel

RECOMMENDED

STNGR Complete AR-15 Upper Receiver with 16 Inch Barrel, BCG and Charging Handle - RPTR Handguard, Black

(1)

STNGR 16″ .223 Wylde Complete Assembled Upper Receiver w/ 15″ RPTR® Handguard, BCG & CH

Sale!

AT3 Tactical 10.5 Inch 9mm Complete AR-15 Upper Assembly - No BCG or Charging Handle copy

(3)

AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH

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AT3™ 16″ .22LR Complete Assembled Upper with BCG and Charging Handle

Sale!

AT3 Tactical Complete .350 Legend AR-15 Upper Receiver - No BCG or CH - Black

AT3™ Assembled AR-15 Upper – .350 Legend Faxon Barrel – No BCG or CH

Sale!

(7)

AT3™ 16 Inch .300 BLK Assembled AR-15 Upper – 16 Inch Ballistic Advantage Barrel – No BCG/CH

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AT3™ FF-ML 10.5 Inch Complete Pistol Upper - Faxon Firearms 10.5 Inch .223/5.56 Barrel - 9" M-LOK Free Float Handguard

(8)

AT3™ 10.5 Inch Assembled AR-15 Pistol Upper – 10.5 Inch Faxon .223/5.56 SOCOM Barrel – No BCG/CH

RECOMMENDED

STNGR Complete AR-15 Upper Receiver with 16 Inch Barrel, BCG and Charging Handle - VYPR Handguard, Black

STNGR 16″ .223 Wylde Complete Assembled Upper Receiver w/ 15″ VYPR® Handguard, BCG & CH

STNGR 14.5 Inch 5.56 Complete Upper w/ 15 Inch HWKXL® Handguard, BCG & CH

STNGR 14.5 Inch 5.56 Complete Upper w/ 15 Inch HWKXL® Handguard, BCG & CH

Daniel Defense M4A1 URG 14.5 Inch Pinned and Welded Complete 5.56 AR-15 Upper Receiver - AT3 Tactical

Daniel Defense M4A1 URG 14.5 Inch Pinned and Welded Complete Assembled 5.56 AR-15 Upper Receiver

STNGR HWK Complete 5.56 Pistol Upper with 12.5 Barrel and Flash Can - Black

STNGR 12.5 Inch 5.56 Complete Assembled Upper w/ 13.5 Inch HWK® Handguard, BCG & CH

Sale!

AT3™ Assembled Forged Upper for AR-15 - 5.56 NATO - 16" Barrel - 15" Free Float Quadrail - No BCG/CH

AT3™ Assembled Forged Upper for AR-15 – 5.56 NATO – 16″ Barrel – 15″ Free Float Quadrail – No BCG/CH – 3 Colors

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AT3™ Assembled Forged Upper for AR-15 - 5.56 NATO - 16" Barrel - 12.5" Free Float Quadrail - No BCG/CH

AT3™ Assembled Forged Upper for AR-15 – 5.56 NATO – 16″ Barrel – 12.5″ Free Float Quadrail – No BCG/CH – 3 Colors

Daniel Defense DDM4V7 16 Inch Complete Lightweight 5.56 AR-15 Upper Receiver - AT3 Tactical

Daniel Defense DDM4V7 16 Inch Complete Assembled Lightweight 5.56 AR-15 Upper Receiver

RECOMMENDED

STNGR Complete AR-15 Upper Receiver with 16 Inch Barrel, BCG and Charging Handle - VLCN Handguard, Black

(1)

STNGR 16″ .223 Wylde Complete Assembled Upper Receiver w/ 15″ VLCN® Handguard, BCG & CH

Radical Firearms 16" 5.56 NATO Complete Upper Receiver with M-LOK Handguard - AT3 Tactical

(1)

Radical Firearms 16″ 5.56 NATO Complete Assembled AR-15 Upper Receiver with M-LOK Handguard

Sale!

AT3™ 16″ .22LR Complete Assembled Forged Upper with BCG, Charging Handle, & Magazine - 8 Colors

(1)

AT3™ 16″ .22LR Complete Assembled Forged Upper with BCG, Charging Handle, & Magazine – 8 Colors

Quickly Change Between Calibers & Lengths with Complete AR-15 Upper Receivers

A complete upper for an AR15 can be put on almost any AR15 lower receiver. Because it is the complete upper half of the rifle, all you need is a built out lower receiver and you will have a fully functioning rifle or pistol. It is by far the quickest and most cost effecient way to swap between calibers. Get a .22lr Upper Receiver for training to keep costs down, and then you can always put on a .300 blackout upper for ultra quiet suppressed shooting.