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5.56x45 Upper Receivers

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Aero Precision M4E1 Threaded PRO Complete Upper with 16.3" 5.56 CHF Mid-Length Barrel and 15" ATLAS R-ONE Handguard - Anodized Black - APUG700705M105-1

Aero Precision M4E1 Threaded PRO Complete Upper with 16.3" 5.56 CHF Mid-Length Barrel and 15" ATLAS R-ONE Handguard - Anodized Black - APUG700705M105-1

$1029 99
In Stock
Aero Precision M4E1 Threaded PRO Complete Upper with 13.7" 5.56 CHF Mid-Length Barrel and 12.7" ATLAS R-ONE Handguard - Anodized Black - APUG700704M104-1

Aero Precision M4E1 Threaded PRO Complete Upper with 13.7" 5.56 CHF Mid-Length Barrel and 12.7" ATLAS R-ONE Handguard - Anodized Black - APUG700704M104-1

$1004 99
In Stock
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Aero Precision AR15 Complete Upper, 16" 5.56 Carbine Barrel with Pinned FSB, MOE Carbine - Anodized Black - APAR502503M64

Aero Precision AR15 Complete Upper, 16" 5.56 Carbine Barrel with Pinned FSB, MOE Carbine - Anodized Black - APAR502503M64
$409 99
In Stock
Aero Precision M4E1 Threaded Complete Upper, 14.5" 5.56 Carbine Length Barrel, 12" M-LOK ATLAS S-ONE Handguard - Anodized Black - APAR700304M32

Aero Precision M4E1 Threaded Complete Upper, 14.5" 5.56 Carbine Length Barrel, 12" M-LOK ATLAS S-ONE Handguard - Anodized Black - APAR700304M32

$564 99
In Stock
Only 3 Left!
CMMG 55B8D86AB Dissent MK4 5.56x45mm NATO 10.50", Left Side Charging Handle, Armor Black, OEM Zeroed Blast Comp, 9.60" M-LOK Handguard for AR-Platform, Picatinny End Plate

CMMG 55B8D86AB Dissent MK4 5.56x45mm NATO 10.50", Left Side Charging Handle, Armor Black, OEM Zeroed Blast Comp, 9.60" M-LOK Handguard for AR-Platform, Picatinny End Plate

$1297 89
In Stock
Only 1 Left!
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)

$449 41
In Stock
Only 1 Left!
CMMG 55BB40BMB Resolute MK4 5.56x45mm NATO 16.10", Midnight Bronze, M-LOK Free-Float Handguard for AR-Platform (No BCG or Charging Handle)

CMMG 55BB40BMB Resolute MK4 5.56x45mm NATO 16.10", Midnight Bronze, M-LOK Free-Float Handguard for AR-Platform (No BCG or Charging Handle)

$449 41
In Stock
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Aero Precision M4E1 Enhanced 14.5" 5.56 M4 Carbine Length Barrel Complete Upper Receiver - Anodized Black - APAR640231M32

Aero Precision M4E1 Enhanced 14.5" 5.56 M4 Carbine Length Barrel Complete Upper Receiver - Anodized Black - APAR640231M32

$564 99
In Stock
Only 6 Left!
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
Only 2 Left!
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 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
Only 4 Left!
Aero Precision M4E1 Enhanced 10.5" 5.56 No Forward Assist Complete Upper Receiver with 9" M-LOK Handguard - Anodized Black - APAR612275M2

Aero Precision M4E1 Enhanced 10.5" 5.56 No Forward Assist Complete Upper Receiver with 9" M-LOK Handguard - Anodized Black - APAR612275M2

$454 99
In Stock
Only 3 Left!
Aero Precision M4E1 Threaded 10.5" 5.56 No Forward Assist Complete Upper Receiver with 9.2" M-LOK ATLAS S-ONE Handguard - Anodized Black - APAR712102M2

Aero Precision M4E1 Threaded 10.5" 5.56 No Forward Assist Complete Upper Receiver with 9.2" M-LOK ATLAS S-ONE Handguard - Anodized Black - APAR712102M2

$449 99
In Stock
Only 3 Left!
Aero Precision M4E1 Threaded 8" 5.56 Complete Upper Receiver with 7.3" ATLAS S-ONE Handguard - Anodized Black - APAR700101M102

Aero Precision M4E1 Threaded 8" 5.56 Complete Upper Receiver with 7.3" ATLAS S-ONE Handguard - Anodized Black - APAR700101M102

$509 99
In Stock
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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

$509 99
In Stock
Only 4 Left!
Aero Precision M4E1 Threaded PRO Complete Upper with 16.3" 5.56 CHF Mid-Length Barrel and 15" ATLAS S-ONE Handguard - Anodized Black - APUG700105M103-1

Aero Precision M4E1 Threaded PRO Complete Upper with 16.3" 5.56 CHF Mid-Length Barrel and 15" ATLAS S-ONE Handguard - Anodized Black - APUG700105M103-1

$1029 99
In Stock
Only 6 Left!
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
Only 4 Left!
Aim Sports AR5CUB5 Complete AR-15 Build Kit 5.56x45mm NATO 16" Black Hardcoat Anodized Aluminum Rec Chrome Moly Barrel with Mid-Length Gas Tube for AR-15

Aim Sports AR5CUB5 Complete AR-15 Build Kit 5.56x45mm NATO 16" Black Hardcoat Anodized Aluminum Rec Chrome Moly Barrel with Mid-Length Gas Tube for AR-15

$449 99
In Stock
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
Only 4 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

$489 99 $624.99
In Stock
Only 2 Left!
Ballistic Advantage 13.9" 5.56 Hanson Mid-Length with 12" Ballistic Advantage LOGIC M-LOK Handguard AR-15 Complete Upper Receiver - BAUR10005

Ballistic Advantage 13.9" 5.56 Hanson Mid-Length with 12" Ballistic Advantage LOGIC M-LOK Handguard AR-15 Complete Upper Receiver - BAUR10005

$497 80
In Stock
Only 2 Left!
Ballistic Advantage 11.3" 5.56 Hanson Carbine Length with 10" Ballistic Advantage LOGIC M-LOK Handguard AR-15 Complete Upper Receiver .625 Gas Block Journal - BAUR10003

Ballistic Advantage 11.3" 5.56 Hanson Carbine Length with 10" Ballistic Advantage LOGIC M-LOK Handguard AR-15 Complete Upper Receiver .625 Gas Block Journal - BAUR10003

$464 55
In Stock
Only 2 Left!
49-72 of 225 Products
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