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5.56x45 Receiver Parts

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Stag Arms STAG 15 Tactical Complete Right Handed AR-15 Upper Receiver, 10.5" Black Nitride Barrel with Aero Precision BREACH Charging Handle & BCG - STAG15100312L

Stag Arms STAG 15 Tactical Complete Right Handed AR-15 Upper Receiver, 10.5" Black Nitride Barrel with Aero Precision BREACH Charging Handle & BCG - STAG15100312L
$449 99 $499.99
In Stock
Only 2 Left!
Aero Precision AR15 Complete Upper, 10.5" 5.56 Carbine Barrel with Pinned FSB, MOE M-LOK Carbine Handguard - Anodized Black with FDE - APAR502504M3

Aero Precision AR15 Complete Upper, 10.5" 5.56 Carbine Barrel with Pinned FSB, MOE M-LOK Carbine Handguard - Anodized Black with FDE - APAR502504M3

$389 99
In Stock
Only 1 Left!
Aero Precision M4E1 Threaded 10.5" 5.56 Carbine No Forward Assist Complete Upper with 9.3" M-LOK ATLAS R-ONE Handguard - OD Green Anodized - APSL100624

Aero Precision M4E1 Threaded 10.5" 5.56 Carbine No Forward Assist Complete Upper with 9.3" M-LOK ATLAS R-ONE Handguard - OD Green Anodized - APSL100624

$369 99 $484.99
In Stock
Only 3 Left!
Aero Precision M4E1 Enhanced 16" 5.56 M4 CMV Carbine Barrel Complete Upper Receiver with 15" Enhanced M-LOK Handguard - Anodized Black - APAR640251M6

Aero Precision M4E1 Enhanced 16" 5.56 M4 CMV Carbine Barrel Complete Upper Receiver with 15" Enhanced M-LOK Handguard - Anodized Black - APAR640251M6
$579 99
In Stock
Only 1 Left!
Aero Precision M4E1 Enhanced 10.5" 5.56 Barrel Complete Upper Receiver with 9" Quad Rail - Anodized Black - APAR640221Q2

Aero Precision M4E1 Enhanced 10.5" 5.56 Barrel Complete Upper Receiver with 9" Quad Rail - Anodized Black - APAR640221Q2
$534 99
In Stock
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Aero Precision M4E1 Threaded 10.5" 5.56 Complete Upper Receiver with 9" ATLAS S-ONE Handguard - Cerakote FDE - APAR700312M2

Aero Precision M4E1 Threaded 10.5" 5.56 Complete Upper Receiver with 9" ATLAS S-ONE Handguard - Cerakote FDE - APAR700312M2

$569 99
In Stock
Only 3 Left!
Aero Precision M4E1 Threaded Complete Upper 16" 5.56x45mm Mid-Length Barrel ATLAS R-ONE 15" M-LOK Handguard Anodized Black - APAR700705M7

Aero Precision M4E1 Threaded Complete Upper 16" 5.56x45mm Mid-Length Barrel ATLAS R-ONE 15" M-LOK Handguard Anodized Black - APAR700705M7
$589 99
In Stock
Aero Precision M4E1 Enhanced 16" 5.56 Mid-Length Complete Upper Receiver with 15" Quad Rail Handguard - Anodized Black - APAR640251Q7

Aero Precision M4E1 Enhanced 16" 5.56 Mid-Length Complete Upper Receiver with 15" Quad Rail Handguard - Anodized Black - APAR640251Q7

$589 99
In Stock
Only 2 Left!
Aero Precision M4E1 Threaded 14.5" 5.56 Mid-Length QPQ No Forward Assist Complete Upper with 13.5" Slimline Handguard - Kodiak Brown Anodized - APSL100753

Aero Precision M4E1 Threaded 14.5" 5.56 Mid-Length QPQ No Forward Assist Complete Upper with 13.5" Slimline Handguard - Kodiak Brown Anodized - APSL100753

$439 99 $534.99
In Stock
Only 3 Left!
Aero Precision AR15 Complete Upper, 10.5" 5.56 Carbine Barrel with Pinned FSB, MOE M-LOK Carbine Handguard - Anodized Black - APAR502503M3

Aero Precision AR15 Complete Upper, 10.5" 5.56 Carbine Barrel with Pinned FSB, MOE M-LOK Carbine Handguard - Anodized Black - APAR502503M3
$389 99
In Stock
Only 2 Left!
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

$554 99
In Stock
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Aero Precision M4E1 Enhanced 14.5" 5.56 Mid-Length Complete Upper Receiver with 12" Enhanced M-LOK Handguard - Cerakote FDE - APAR640232M5

Aero Precision M4E1 Enhanced 14.5" 5.56 Mid-Length Complete Upper Receiver with 12" Enhanced M-LOK Handguard - Cerakote FDE - APAR640232M5

$609 99
In Stock
Only 2 Left!
LBE ARUPPER AR Upper Recv w/ASST

LBE ARUPPER AR Upper Recv w/ASST

$119 51
In Stock
Aero Precision AR15 Complete Upper, 10.5" 5.56 Carbine Barrel with Pinned FSB, MOE SL Carbine Handguard - Anodized Black with FDE - APAR502506M3

Aero Precision AR15 Complete Upper, 10.5" 5.56 Carbine Barrel with Pinned FSB, MOE SL Carbine Handguard - Anodized Black with FDE - APAR502506M3

$389 99
In Stock
Only 5 Left!
Aero Precision AR15 Complete Upper, 16" 5.56 Mid-Length Barrel with Pinned FSB, MOE Mid-Length - FDE - APAR502504M65

Aero Precision AR15 Complete Upper, 16" 5.56 Mid-Length Barrel with Pinned FSB, MOE Mid-Length - FDE - APAR502504M65
$414 99
In Stock
Only 4 Left!
Radian Weapons R0427 Builder Kit Radian Black, AX556 Ambi Lower, 10" Handgaurd, Includes Most Lower Parts

Radian Weapons R0427 Builder Kit Radian Black, AX556 Ambi Lower, 10" Handgaurd, Includes Most Lower Parts

$1254 95
In Stock
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

$777 77
In Stock
Radian Weapons R0428 Builder Kit Radian Gray, AX556 Ambi Lower, 10" Handgaurd, Includes Most Lower Parts

Radian Weapons R0428 Builder Kit Radian Gray, AX556 Ambi Lower, 10" Handgaurd, Includes Most Lower Parts

$1254 95
In Stock
Aero Precision AR15 Complete Upper, 16" 5.56 Mid-Length Barrel with Pinned FSB, M4 Handguard - Anodized Black - APAR505631

Aero Precision AR15 Complete Upper, 16" 5.56 Mid-Length Barrel with Pinned FSB, M4 Handguard - Anodized Black - APAR505631
$404 99
In Stock
Tacfire 5.56x45mm 16" AR-15 Complete Upper Receiver with Bolt Carrier Group, Charging Handle, M-LOK Handguard - BU-556-16

Tacfire 5.56x45mm 16" AR-15 Complete Upper Receiver with Bolt Carrier Group, Charging Handle, M-LOK Handguard - BU-556-16
$294 44
In Stock
Aero Precision M4E1 Threaded Complete Upper, 14.5" 5.56 Mid-Length Barrel with Pinned Gamma 556 SL, 12" M-LOK ATLAS R-ONE Handguard - Anodized Black - APAR700704M5V38

Aero Precision M4E1 Threaded Complete Upper, 14.5" 5.56 Mid-Length Barrel with Pinned Gamma 556 SL, 12" M-LOK ATLAS R-ONE Handguard - Anodized Black - APAR700704M5V38

$654 99
In Stock
Tacfire 5.56x45mm 5" AR-15 Complete Upper Receiver with Bolt Carrier Group, Charging Handle, M-LOK Handguard, and Adjustable Gas Block - BU-556-5

Tacfire 5.56x45mm 5" AR-15 Complete Upper Receiver with Bolt Carrier Group, Charging Handle, M-LOK Handguard, and Adjustable Gas Block - BU-556-5

$324 46
In Stock
Only 3 Left!
Spikes Tactical Midlength Complete 5.56x45mm NATO 16", Black, 12" Picatinny Handguard, A2 Flash Hider

Spikes Tactical Midlength Complete 5.56x45mm NATO 16", Black, 12" Picatinny Handguard, A2 Flash Hider

$829 25
In Stock
Only 1 Left!
Aero Precision AR15 Complete Upper, 16" 5.56 Mid-Length Barrel with Pinned FSB, MOE Mid-Length - Anodized Black - APAR502503M65

Aero Precision AR15 Complete Upper, 16" 5.56 Mid-Length Barrel with Pinned FSB, MOE Mid-Length - Anodized Black - APAR502503M65

$414 99
In Stock
Only 3 Left!
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