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5.56x45 AR-15 Upper Receivers

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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

$589 99
In Stock
Only 2 Left!
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

$619 99
In 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

$554 99
In Stock
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Aero Precision M4E1 Threaded Complete Upper, 12.5" 5.56 Carbine Length Barrel, 10.3" M-LOK ATLAS S-ONE Handguard - Cerakote FDE - APAR700113M30

Aero Precision M4E1 Threaded Complete Upper, 12.5" 5.56 Carbine Length Barrel, 10.3" M-LOK ATLAS S-ONE Handguard - Cerakote FDE - APAR700113M30

$589 99
In Stock
Only 2 Left!
Aero Precision Threaded Complete Upper, 16" 5.56 HBAR Mid-Length Barrel with 15" ATLAS S-ONE M-LOK Handguard - FDE Cerakote - APAR700115M97

Aero Precision Threaded Complete Upper, 16" 5.56 HBAR Mid-Length Barrel with 15" ATLAS S-ONE M-LOK Handguard - FDE Cerakote - APAR700115M97

$624 99
In Stock
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Aero Precision Threaded PRO Complete Upper, 16.3" 5.56 CHF Mid-Length Barrel with 15" ATLAS R-ONE M-LOK Handguard - Kodiak Brown Anodized - APUG700401M103-1

Aero Precision Threaded PRO Complete Upper, 16.3" 5.56 CHF Mid-Length Barrel with 15" ATLAS R-ONE M-LOK Handguard - Kodiak Brown Anodized - APUG700401M103-1

$1029 99
In Stock
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Aero Precision M4E1 Threaded PRO Complete Upper, 16.3" 5.56 CHF Mid-Length Barrel with 15" ATLAS S-ONE M-LOK Handguard - Kodiak Brown Anodized - APUG700392M103-1

Aero Precision M4E1 Threaded PRO Complete Upper, 16.3" 5.56 CHF Mid-Length Barrel with 15" ATLAS S-ONE M-LOK Handguard - Kodiak Brown Anodized - APUG700392M103-1

$1029 99
In Stock
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Aero Precision Enhanced PRO Complete Upper, 16.3" 5.56 CHF Mid-Length Barrel with 15" Enhanced M-LOK Handguard - Anodized Black - APUG600218M103-1

Aero Precision Enhanced PRO Complete Upper, 16.3" 5.56 CHF Mid-Length Barrel with 15" Enhanced M-LOK Handguard - Anodized Black - APUG600218M103-1

$989 99
In Stock
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Aero Precision M4E1 Complete Upper, 8" 5.56 Pistol Barrel with 7.3" Enhanced GEN 2 Handguard - Anodized Black - APAR640269M102

Aero Precision M4E1 Complete Upper, 8" 5.56 Pistol Barrel with 7.3" Enhanced GEN 2 Handguard - Anodized Black - APAR640269M102

$509 99
In Stock
Only 1 Left!
Aero Precision M4E1 Thread 8" 5.56 Complete Upper Receiver with ATLAS S-ONE Handguard - Cerakote FDE - APAR700111M102

Aero Precision M4E1 Thread 8" 5.56 Complete Upper Receiver with ATLAS S-ONE Handguard - Cerakote FDE - APAR700111M102

$544 99
In Stock
Only 1 Left!
Rock River Arms BB0470 LAR-15M Rrage 3G Complete Upper, 5.56x45mm NATO 16", Black, Aluminum Rec, 15" M-LOK Handguard, A2 Flash Hider, No Forward Assist

Rock River Arms BB0470 LAR-15M Rrage 3G Complete Upper, 5.56x45mm NATO 16", Black, Aluminum Rec, 15" M-LOK Handguard, A2 Flash Hider, No Forward Assist

$536 44
In Stock
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Aero Precision M4E1 Threaded Complete Upper, 13.9" 5.56x45mm CMV Mid-Length Barrel with 12.7" ATLAS S-ONE M-LOK Handguard - Anodized Black - APAR700104M99

Aero Precision M4E1 Threaded Complete Upper, 13.9" 5.56x45mm CMV Mid-Length Barrel with 12.7" ATLAS S-ONE M-LOK Handguard - Anodized Black - APAR700104M99

$574 99
In Stock
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Aero Precision M4E1 Threaded Complete Upper, 13.9" 5.56x45mm CMV Mid-Length Barrel with 12.7" ATLAS S-ONE M-LOK Handguard - Cerakote FDE - APAR700114M99

Aero Precision M4E1 Threaded Complete Upper, 13.9" 5.56x45mm CMV Mid-Length Barrel with 12.7" ATLAS S-ONE M-LOK Handguard - Cerakote FDE - APAR700114M99

$609 99
In Stock
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Aero Precision M4E1 Threaded 16" 5.56x45mm Mid-Length Complete Upper Receiver with ATALS R-ONE Handguard - OD Green Anodized - APAR700178M7

Aero Precision M4E1 Threaded 16" 5.56x45mm Mid-Length Complete Upper Receiver with ATALS R-ONE Handguard - OD Green Anodized - APAR700178M7

$589 99
In Stock
Only 1 Left!
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
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
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Sons of Liberty M4-89-14.5 M4-89 14.5" Rifle 556NATO 30rd

Sons of Liberty M4-89-14.5 M4-89 14.5" Rifle 556NATO 30rd

$2007 96
In Stock
Aero Precision M4E1 Enhanced Gas Piston Complete Upper with 16" 5.56 M4 Carbine Length Barrel & 15" Enhanced M-LOK Handguard - Anodized Black - APAR100218M73

Aero Precision M4E1 Enhanced Gas Piston Complete Upper with 16" 5.56 M4 Carbine Length Barrel & 15" Enhanced M-LOK Handguard - Anodized Black - APAR100218M73

$799 99
In Stock
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Aero Precision M4E1 Threaded 13.9" 5.56 Mid-Length No Forward Assist Complete Upper with 12.7" M-LOK ATLAS R-ONE Handguard - Anodized Black - APSL100634

Aero Precision M4E1 Threaded 13.9" 5.56 Mid-Length No Forward Assist Complete Upper with 12.7" M-LOK ATLAS R-ONE Handguard - Anodized Black - APSL100634

$399 99 $549.99
In Stock
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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

$604 99
In Stock
Only 1 Left!
Aero Precision M4E1 Threaded Complete Upper, 16" 5.56 M4 Barrel, 15" M-LOK ATLAS S-ONE Handguard - Anodized Black - APAR700305M6

Aero Precision M4E1 Threaded Complete Upper, 16" 5.56 M4 Barrel, 15" M-LOK ATLAS S-ONE Handguard - Anodized Black - APAR700305M6

$579 99
In Stock
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Aero Precision M4E1 Threaded 10.5" 5.56 Carbine No Forward Assist Complete Upper wtih 9.3" M-LOK ATLAS S-ONE Handguard - OD Green Anodized - APSL100625

Aero Precision M4E1 Threaded 10.5" 5.56 Carbine No Forward Assist Complete Upper wtih 9.3" M-LOK ATLAS S-ONE Handguard - OD Green Anodized - APSL100625

$369 99 $485.99
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Aero Precision AR15 16" 5.56 Carbine-Length M4 QPQ Barrel Complete Upper 13.5" Slimline Handguard - Left Handed - Anodized Black - APSL100707

Aero Precision AR15 16" 5.56 Carbine-Length M4 QPQ Barrel Complete Upper 13.5" Slimline Handguard - Left Handed - Anodized Black - APSL100707

$399 99 $499.99
In Stock
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Aero Precision AR15 16" 5.56 Carbine-Length M4 CHM/PH Barrel Complete Upper 13" Slimline Handguard Left Handed - Anodized Black - APSL100709

Aero Precision AR15 16" 5.56 Carbine-Length M4 CHM/PH Barrel Complete Upper 13" Slimline Handguard Left Handed - Anodized Black - APSL100709

$449 99 $549.99
In Stock
Only 4 Left!
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