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5.56x45 Rifle Parts

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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
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
Tacfire 5.56x45mm 7" AR-15 Complete Upper Receiver with Bolt Carrier Group, Charging Handle, M-LOK Handguard - BU-556-7

Tacfire 5.56x45mm 7" AR-15 Complete Upper Receiver with Bolt Carrier Group, Charging Handle, M-LOK Handguard - BU-556-7

$318 75
In Stock
Only 4 Left!
Aero Precision M4E1 Threaded 16" 5.56 Pencil Complete Upper Receiver with ATLAS R-ONE Handguard - Anodized Black - APAR700705M39

Aero Precision M4E1 Threaded 16" 5.56 Pencil Complete Upper Receiver with ATLAS R-ONE Handguard - Anodized Black - APAR700705M39

$469 99 $594.99
In Stock
Only 2 Left!
Aero Precision M4E1 Threaded 14.5" 5.56 Carbine Length Complete Upper Receiver with 12" ATLAS R-ONE Handguard - Anodized Black - APAR700704M32

Aero Precision M4E1 Threaded 14.5" 5.56 Carbine Length Complete Upper Receiver with 12" ATLAS R-ONE Handguard - Anodized Black - APAR700704M32

$389 99 $564.99
In Stock
Only 4 Left!
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

$479 99 $609.99
In Stock
Only 2 Left!
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

$499 99 $589.99
In Stock
Only 1 Left!
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

$429 99 $609.99
In Stock
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Aero Precision 16.3" 5.56 Cold Hammer Forged Barrel with Dimple, Mid-Length - APRH100823C

Aero Precision 16.3" 5.56 Cold Hammer Forged Barrel with Dimple, Mid-Length - APRH100823C

$209 99 $294.99
In Stock
Only 3 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

$689 99 $1,029.99
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!
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

$399 99 $589.99
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 - 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

$399 99 $554.99
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

$429 99 $619.99
In 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

$469 99 $589.99
In Stock
Only 2 Left!
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

$649 99 $1,004.99
In Stock
Only 3 Left!
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
$649 99 $1,029.99
In Stock
Aero Precision 13.7" 5.56 Cold Hammer Forged Barrel with Dimple, Mid-Length - APRH100822C

Aero Precision 13.7" 5.56 Cold Hammer Forged Barrel with Dimple, Mid-Length - APRH100822C

$239 99 $279.99
In Stock
Bushmaster 0040011BLK Bravo Zulu Complete Upper 5.56x45mm NATO 16", Black, 14" BFI M-LOK Handgaurd, Snake Charmer Muzzle Brake

Bushmaster 0040011BLK Bravo Zulu Complete Upper 5.56x45mm NATO 16", Black, 14" BFI M-LOK Handgaurd, Snake Charmer Muzzle Brake

$600 02
In Stock
Only 2 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!
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

$364 99 $564.99
In Stock
Only 3 Left!
Aero Precision M4E1 Complete Upper, 16" 5.56 Mid-Length Barrel, EQ-15 Gen 2 Handguard - FDE Cerakote - APAR640252Q7

Aero Precision M4E1 Complete Upper, 16" 5.56 Mid-Length Barrel, EQ-15 Gen 2 Handguard - FDE Cerakote - APAR640252Q7

$419 99 $619.99
In Stock
Only 4 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)

$471 60
In Stock
Aero Precision M4E1 Threaded 10.5" 5.56 Complete Upper Receiver with ATLAS R-ONE Handguard - Anodized Black - APAR700702M2

Aero Precision M4E1 Threaded 10.5" 5.56 Complete Upper Receiver with ATLAS R-ONE Handguard - Anodized Black - APAR700702M2

$359 99 $534.99
In Stock
Only 6 Left!
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