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5.56x45 Upper Receivers

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Tacfire 5.56x45mm 10.5" AR-15 Complete Upper Receiver with Bolt Carrier Group, Charging Handle, M-LOK Handguard - BU-556-10

Tacfire 5.56x45mm 10.5" AR-15 Complete Upper Receiver with Bolt Carrier Group, Charging Handle, M-LOK Handguard - BU-556-10
$319 14
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Aero Precision M4E1 Threaded 20" 5.56 Complete Upper Receiver with 15" ATLAS S-ONE Handguard - Anodized Black - APAR700305M48

Aero Precision M4E1 Threaded 20" 5.56 Complete Upper Receiver with 15" ATLAS S-ONE Handguard - Anodized Black - APAR700305M48

$409 99 $609.99
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TacFire BU-556-7 AR-15 Complete Upper, 5.56x45mm NATO, 7" Black Nitride Barrel, Black Anodized Finish

TacFire BU-556-7 AR-15 Complete Upper, 5.56x45mm NATO, 7" Black Nitride Barrel, Black Anodized Finish
$279 99
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Cobalt Kinetics CK-Pro URG AR-15 Compatible 5.56 NATO 13.7" Barrel Black Cerakote Finish

Cobalt Kinetics CK-Pro URG AR-15 Compatible 5.56 NATO 13.7" Barrel Black Cerakote Finish

$775 99
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Gemtech 13833 Gvac Upper Receiver 5.56x45mm NATO 16.10", Black, 15" M-LOK Handguard, ETM Flash Hider, BCG Included

Gemtech 13833 Gvac Upper Receiver 5.56x45mm NATO 16.10", Black, 15" M-LOK Handguard, ETM Flash Hider, BCG Included

$879 00
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FightLite MCR-556-DFRS Upper Receiver 5.56 NATO 12.5" Black

FightLite MCR-556-DFRS Upper Receiver 5.56 NATO 12.5" Black

$6599 99
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CMMG 55BB40BAB Resolute MK4 5.56x45mm NATO 16.10", Armor Black, M-LOK Free-Float Handguard for AR-Platform (No BCG or Charging Handle)

CMMG 55BB40BAB Resolute MK4 5.56x45mm NATO 16.10", Armor Black, M-LOK Free-Float Handguard for AR-Platform (No BCG or Charging Handle)

$479 93
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Fightlite Industries MCR060M Dual-Feed AR-15 Upper, 5.56x45mm NATO, 16.25" Barrel, Black Finish.

Fightlite Industries MCR060M Dual-Feed AR-15 Upper, 5.56x45mm NATO, 16.25" Barrel, Black Finish.

$5899 99
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Patriot Ordnance Factory Minuteman Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard Lo Pro DI Gas Block (Mid Length)

Patriot Ordnance Factory Minuteman Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard Lo Pro DI Gas Block (Mid Length)

$1040 00
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Patriot Ordnance Factory P415 Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard (Piston Driven)

Patriot Ordnance Factory P415 Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard (Piston Driven)

$1359 00
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Patriot Ordnance Factory Renegade + Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard Adjustable Block

Patriot Ordnance Factory Renegade + Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard Adjustable Block

$984 96
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Cobalt Kinetics CK-Pro 6.75" Stripped Upper Receiver Group - CKPROURG675SBLK

Cobalt Kinetics CK-Pro 6.75" Stripped Upper Receiver Group - CKPROURG675SBLK

$775 99
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Patriot Ordnance Factory Renegade + Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard Adjustable Block

Patriot Ordnance Factory Renegade + Complete Upper 5.56x45mm NATO 10.50" Black Nitride Barrel Aluminum Black Anodized Receiver 9" M-LOK Handguard Adjustable Block

$984 96
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Cobalt Kinetics CK-Pro Urg 5.56x45mm NATO 14.50" Black Cerakote Upper Receiver Group - CKPROURG556145BLK

Cobalt Kinetics CK-Pro Urg 5.56x45mm NATO 14.50" Black Cerakote Upper Receiver Group - CKPROURG556145BLK

$1230 35
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Cobalt Kinetics CK-Pro Urg 5.56x45mm NATO 16" Black Cerakote Upper Receiver Group - CKPROURG55616BBLK

Cobalt Kinetics CK-Pro Urg 5.56x45mm NATO 16" Black Cerakote Upper Receiver Group - CKPROURG55616BBLK

$1230 35
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Aero Precision M4E1 Threaded 8" 5.56 Complete Upper Receiver with 7" M-LOK ATLAS R-ONE Handguard - Anodized Black - APAR700701M102

Aero Precision M4E1 Threaded 8" 5.56 Complete Upper Receiver with 7" M-LOK ATLAS R-ONE Handguard - Anodized Black - APAR700701M102

Out of Stock
Aero Precision M4E1 Threaded 20" 5.56 Complete Upper Receiver with 15" ATLAS S-ONE Handguard - Cerakote FDE - APAR700315M48

Aero Precision M4E1 Threaded 20" 5.56 Complete Upper Receiver with 15" ATLAS S-ONE Handguard - Cerakote FDE - APAR700315M48

Out of Stock
TacFire 5.56x45mm 16" AR-15 Complete Upper Receiver with BCG

TacFire 5.56x45mm 16" AR-15 Complete Upper Receiver with BCG
Out of Stock
TacFire BU-556-5 AR-15 Complete Upper Assembly 5.56x45mm NATO 5" Black Nitride Barrel Black Finish

TacFire BU-556-5 AR-15 Complete Upper Assembly 5.56x45mm NATO 5" Black Nitride Barrel Black Finish

Out of Stock
Aero Precision M4E1 Threaded Complete Upper, 14.5" 5.56 Carbine Length Barrel, 12" M-LOK ATLAS S-ONE Handguard - FDE Cerakote - APAR700314M32

Aero Precision M4E1 Threaded Complete Upper, 14.5" 5.56 Carbine Length Barrel, 12" M-LOK ATLAS S-ONE Handguard - FDE Cerakote - APAR700314M32

Out of Stock
Aero Precision M4E1 Enhanced Complete Upper, 16" 5.56 HBAR MID-Length Barrel with 15" Enhanced Quad Rail Handguard - Cerakote FDE - APAR600224Q97

Aero Precision M4E1 Enhanced Complete Upper, 16" 5.56 HBAR MID-Length Barrel with 15" Enhanced Quad Rail Handguard - Cerakote FDE - APAR600224Q97
Out of Stock
Aero Precision M4E1 Threaded Complete Upper, 12.5" 5.56 Carbine Length Barrel, 10.3" M-LOK ATLAS S-ONE Handguard - Anodized Black - APAR700103M30

Aero Precision M4E1 Threaded Complete Upper, 12.5" 5.56 Carbine Length Barrel, 10.3" M-LOK ATLAS S-ONE Handguard - Anodized Black - APAR700103M30

Out of Stock
Aero Precision M4E1 Threaded Complete Upper, 12.5" 5.56 Carbine Length Barrel with 10.3" ATLAS R-ONE M-LOK Handguard - Anodized Black - APAR700703M30

Aero Precision M4E1 Threaded Complete Upper, 12.5" 5.56 Carbine Length Barrel with 10.3" ATLAS R-ONE M-LOK Handguard - Anodized Black - APAR700703M30

Out of Stock
Aero Precision M4E1 Enhanced Complete Upper, 16" 5.56 HBAR MID-Length Barrel with 15" Enhanced Quad Rail Handguard - Anodized Black - APAR600206Q97

Aero Precision M4E1 Enhanced Complete Upper, 16" 5.56 HBAR MID-Length Barrel with 15" Enhanced Quad Rail Handguard - Anodized Black - APAR600206Q97

Out of Stock
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