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5.56x45 Semi-Auto Receiver Parts

22 Product(s)
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Aero Precision M4E1 Threaded 14.5" 5.56 Mid-Length Complete Upper Receiver w/ ATLAS R-ONE Handguard - Anodized Black - APAR700704M5

Aero Precision M4E1 Threaded 14.5" 5.56 Mid-Length Complete Upper Receiver w/ ATLAS R-ONE Handguard - Anodized Black - APAR700704M5
$399 99 $574.99
In Stock
Only 1 Left!
Sharps Bros SBLR07 BROS. Overthrow AR-15 Stripped Lower Billet Aluminum

Sharps Bros SBLR07 BROS. Overthrow AR-15 Stripped Lower Billet Aluminum
$265 95
In Stock
Aero Precision M4E1 Assembled AR 15 Upper Receiver 5.56x45mm Mid-Length 16" Mid Length Barrel EM-15 Gen 2 M-LOK Handguard Anodized Black - APAR640251M7

Aero Precision M4E1 Assembled AR 15 Upper Receiver 5.56x45mm Mid-Length 16" Mid Length Barrel EM-15 Gen 2 M-LOK Handguard Anodized Black - APAR640251M7
$519 99 $589.99
In Stock
Only 1 Left!
Aero Precision - M4E1 Complete Upper Receiver - 16" Barrel - .223/5.56 - APAR712705M7

Aero Precision - M4E1 Complete Upper Receiver - 16" Barrel - .223/5.56 - APAR712705M7
$429 99 $579.99
In Stock
Only 4 Left!
SilencerCo SU4766 SCO15 Lower Receiver Black Anodized Finish 7075-T6 Aluminum Material for AR-15

SilencerCo SU4766 SCO15 Lower Receiver Black Anodized Finish 7075-T6 Aluminum Material for AR-15

$269 00
In Stock
Spikes Tactical STLS033 Water Boarding Instructor Stripped Lower Receiver Multi-Caliber 7075-T6 Aluminum Black Anodized for AR-15

Spikes Tactical STLS033 Water Boarding Instructor Stripped Lower Receiver Multi-Caliber 7075-T6 Aluminum Black Anodized for AR-15

$107 10
In Stock
Aero Precision M4E1 Threaded 14.5" 5.56 Mid-Length Complete Upper Receiver w/ ATLAS R-ONE Handguard -Cerakote FDE - APAR700714M5

Aero Precision M4E1 Threaded 14.5" 5.56 Mid-Length Complete Upper Receiver w/ ATLAS R-ONE Handguard -Cerakote FDE - APAR700714M5

$479 99 $609.99
In Stock
Only 2 Left!
Aero Precision M4E1 Threaded 10.5" 5.56 No Forward Assist Complete Upper Receiver w/ 9.2" M-LOK ATLAS R-ONE Handguard - Cerakote FDE - APAR712712M2

Aero Precision M4E1 Threaded 10.5" 5.56 No Forward Assist Complete Upper Receiver w/ 9.2" M-LOK ATLAS R-ONE Handguard - Cerakote FDE - APAR712712M2
Out of Stock
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
Out of Stock
Aero Precision AR15 Complete Upper with 16" 5.56 Mid-Length Heavy QPQ Barrel & 15" ATLAS R-ONE M-LOK Handguard - OD Green Anodized - BLEM - APSL100479B

Aero Precision AR15 Complete Upper with 16" 5.56 Mid-Length Heavy QPQ Barrel & 15" ATLAS R-ONE M-LOK Handguard - OD Green Anodized - BLEM - APSL100479B

Out of Stock
Geissele Automatics Super Duty Stripped Lower Receiver DDC for AR-15

Geissele Automatics Super Duty Stripped Lower Receiver DDC for AR-15

Out of Stock
Primary Weapons 22-2M100SM1B MK1 Mod 2-M Black Anodized Stripped Lower for AR-15, Oversized Ambi Bolt Release/Catch

Primary Weapons 22-2M100SM1B MK1 Mod 2-M Black Anodized Stripped Lower for AR-15, Oversized Ambi Bolt Release/Catch

Out of Stock
Grey Ghost Precision GGP-S-Light-RCVR Ghost Prec MKII AR15 RCVR SET Billet w/BOLT Release Black

Grey Ghost Precision GGP-S-Light-RCVR Ghost Prec MKII AR15 RCVR SET Billet w/BOLT Release Black

Out of Stock
GGP GGPC GGP Cornerstone Forged Lower

GGP GGPC GGP Cornerstone Forged Lower

Out of Stock
Spikes Tactical STLB630-PH Billet Lowr Stripped Samurai Painted

Spikes Tactical STLB630-PH Billet Lowr Stripped Samurai Painted
Out of Stock
Aero Precision M4E1 Threaded 12.5" 5.56 Carbine Length Complete Upper Receiver w/ ATLAS R-ONE Handguard - Anodized Black - APAR700704M30

Aero Precision M4E1 Threaded 12.5" 5.56 Carbine Length Complete Upper Receiver w/ ATLAS R-ONE Handguard - Anodized Black - APAR700704M30

Out of Stock
Aero Precision M4E1 Threaded 10.5" 5.56 No Forward Assist Complete Upper Receiver w/ 9.2" M-LOK ATLAS R-ONE Handguard - Anodized Black - APAR712702M2

Aero Precision M4E1 Threaded 10.5" 5.56 No Forward Assist Complete Upper Receiver w/ 9.2" M-LOK ATLAS R-ONE Handguard - Anodized Black - APAR712702M2
Out of Stock
FMK Firearms GAR1ETB AR-1 AR15 Stripped Polymer Lower Tiffany Blue

FMK Firearms GAR1ETB AR-1 AR15 Stripped Polymer Lower Tiffany Blue
Out of Stock
FMK Firearms FMKGAR1EBRT AR-1 AR15 Stripped Polymer Lower Burnt Bronze

FMK Firearms FMKGAR1EBRT AR-1 AR15 Stripped Polymer Lower Burnt Bronze
Out of Stock
FMK Firearms FMKGAR1EDE AR-1 AR15 Stripped Polymer Lower Dark Earth

FMK Firearms FMKGAR1EDE AR-1 AR15 Stripped Polymer Lower Dark Earth

Out of Stock
Spike STLB600-PCH Billet Lowr Stripped RB Crusdr Pantd

Spike STLB600-PCH Billet Lowr Stripped RB Crusdr Pantd

Out of Stock
Spikes STLB600 Rare Breed Crusader Stripped Lower Receiver Multi-Caliber 7075-T6 Aluminum Black Anodized for AR-15

Spikes STLB600 Rare Breed Crusader Stripped Lower Receiver Multi-Caliber 7075-T6 Aluminum Black Anodized for AR-15

Out of Stock
22 Product(s)
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