AR-15 Upper: Complete Upper Assemblies
Get the Best Value for AR-15 Upper
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.
What is the advantage of buying a complete upper?
Because it is the complete upper half of the rifle, all you need is a lower half and you will have a fully functioning rifle. Many people buy complete uppers in .22LR or .300 Blackout, and this allows you to quickly swap to different calibers by just switching upper receivers.
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AT3™ FF-ML 11.5 Inch Complete Pistol Upper – .223/5.56 11.5 Inch Faxon Firearms Barrel – 12 Inch M-LOK Free Float HandguardFrom
$358.99$328.99 -
AT3™ FF-ML 11.5″ Complete Pistol Upper – .223/5.56 11.5″ Ballistic Advantage Barrel – 12″ M-LOK Free Float HandguardFrom
$358.99$304.99 -
AT3™ FF-KM Complete Rifle Upper – .223/5.56 16″ Ballistic Advantage Barrel – Keymod Free Float HandguardFrom
$388.99$329.99 -
AT3™ FF-ML 10.5 Inch Complete Pistol Upper – Choose Your Own 10.5 Inch .223/5.56 Barrel – 12″ M-LOK Free Float HandguardFrom
$308.99$262.99 -
AT3™ Complete Rifle Kit – Magpul Lower Build Kit – .223/5.56 16 Inch Ballistic Advantage Barrel – M-LOK Free Float HandguardFrom
$699.99$599.99 -
AT3™ FF-ML 20 Inch 6.5 Grendel Complete Upper – 6.5 Grendel Type II 20 Inch Faxon Firearms Barrel – 15 Inch M-LOK Free Float HandguardFrom
$605.99$515.99 -
AT3™ FF-KM 11.5″ Complete Pistol Upper – .223/5.56 11.5″ Ballistic Advantage Barrel – 10″ Keymod Free Float HandguardFrom
$388.99$329.99 -
AT3™ FF-ML Complete Rifle Upper – .223/5.56 16″ Ballistic Advantage Barrel – M-LOK Free Float HandguardFrom
$386.99$327.99 -
AT3™ FF-ML 16 Inch .300 BLK Complete Upper – .300 AAC Blackout 16 Inch Ballistic Advantage Barrel – 15″ M-LOK Free Float HandguardFrom
$406.99$344.99 -
AT3™ FF-ML 9.5 Inch .300 BLK Complete Pistol Upper – .300 AAC Blackout 9.5 Inch Ballistic Advantage Barrel – 12″ M-LOK Free Float HandguardFrom
$377.99$320.99 -
DPMS Oracle LR-308 Complete Upper Receiver Assembly – 308 Win – 16″ Barrel
$694.00$648.99 -
CMMG MK4T 22LR Complete Upper w/ BCG – 16″ Barrel with 1:16 Twist – KeyMod Free Float Handguard
$599.95$557.99 -
CMMG 9MM Complete Upper w/ BCG – 16″ Barrel w/ A2 Front Sight
$749.95$694.49 -
CMMG MK4T 300 AAC Blackout Complete Upper w/ BCG – Nitride 16″ Barrel – KeyMod Free Float Handguard$688.99 -
CMMG MK4T 300 AAC Blackout Complete Upper w/ BCG – Stainless 16″ Barrel – KeyMod Free Float Handguard
$749.95$711.99 -
CMMG MK3 .308 Complete Upper w/ BCG – Stainless 18″ Barrel – KeyMod Free Float Handguard
$999.95$961.49 -
Bushmaster AR-15 A3 Upper Receiver Assembly w/ Bolt Carrier Group – 5.56/.223 NATO 16″ Barrel
$539.00$479.99
