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Semi-Auto Upper Receivers

1-24 of 61 Products
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Aero Precision AR-15 M4E1 Builder Set with Lower Receiver, Upper Receiver, & Handguard - Custom Finish

Aero Precision AR-15 M4E1 Builder Set with Lower Receiver, Upper Receiver, & Handguard - Custom Finish
$549 99
In Stock
Aero Precision EPC-9 Builder Set with Lower Receiver, Upper Receiver, & Handguard - Custom Finish

Aero Precision EPC-9 Builder Set with Lower Receiver, Upper Receiver, & Handguard - Custom Finish
$599 99
In Stock
Only 1 Left!
Aero Precision M5 22" 6.5 Creedmoor SS Complete Upper Receiver w/ ATLAS R-ONE Handguard - Cerakote FDE - APAR538715M46

Aero Precision M5 22" 6.5 Creedmoor SS Complete Upper Receiver w/ ATLAS R-ONE Handguard - Cerakote FDE - APAR538715M46

$814 99
In Stock
Only 1 Left!
Aero Precision M4E1 Threaded 8" .300 Blackout Complete Upper Receiver w/ ATLAS R-ONE Handguard - Anodized Black - APAR700701M1

Aero Precision M4E1 Threaded 8" .300 Blackout Complete Upper Receiver w/ ATLAS R-ONE Handguard - Anodized Black - APAR700701M1
$538 13
In Stock
Only 4 Left!
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

$609 99
In Stock
Only 2 Left!
Alexander Arms UST-17ST Upper Receiver AR15 18" S/S Fluted w/KIT

Alexander Arms UST-17ST Upper Receiver AR15 18" S/S Fluted w/KIT
$799 12
In Stock
Only 2 Left!
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
$589 99
In Stock
Only 1 Left!
Aero Precision M4E1 Builder Set with 7" ATLAS S-ONE Handguard - Anodized Black - APCS100179

Aero Precision M4E1 Builder Set with 7" ATLAS S-ONE Handguard - Anodized Black - APCS100179

$356 97
In Stock
Only 3 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
$579 99
In Stock
Only 4 Left!
Aero Precision AR15 Threaded Assembled Receiver Set with Trigger Guard - OD Green Cerakote - APCS100822

Aero Precision AR15 Threaded Assembled Receiver Set with Trigger Guard - OD Green Cerakote - APCS100822
Out of Stock
Aero Precision M5 (.308) Threaded Assembled Receiver Set - Cerakote FDE - APCS308160

Aero Precision M5 (.308) Threaded Assembled Receiver Set - Cerakote FDE - APCS308160
Out of Stock
Aero Precision M4E1 Threaded Assembled Receiver Set - Anodized Black - APCS100177

Aero Precision M4E1 Threaded Assembled Receiver Set - Anodized Black - APCS100177
Out of Stock
Aero Precision M4E1 Threaded Assembled Receiver Set - Cerakote FDE - APCS100724

Aero Precision M4E1 Threaded Assembled Receiver Set - Cerakote FDE - APCS100724
Out of Stock
Aero Precision AR15 Complete Upper with 8" .300 Blackout Pistol Length QPQ Barrel & 7.3" ATLAS S-ONE - Sniper Grey Cerakote with Stripped Lower Receiver - APSL100563S

Aero Precision AR15 Complete Upper with 8" .300 Blackout Pistol Length QPQ Barrel & 7.3" ATLAS S-ONE - Sniper Grey Cerakote with Stripped Lower Receiver - APSL100563S

Out of Stock
Aero Precision AR15 Threaded Assembled Receiver Set - Cerakote FDE - APCS100821

Aero Precision AR15 Threaded Assembled Receiver Set - Cerakote FDE - APCS100821

Out of Stock
Aero Precision M4E1 Threaded 8" .300 Blackout Complete Upper Receiver w/ ATLAS R-ONE Handguard - Cerakote FDE - APAR700711M1

Aero Precision M4E1 Threaded 8" .300 Blackout Complete Upper Receiver w/ ATLAS R-ONE Handguard - Cerakote FDE - APAR700711M1
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
Aero Precision EPC-9 Enhanced Receiver Set - Cerakote FDE - APCS620006

Aero Precision EPC-9 Enhanced Receiver Set - Cerakote FDE - APCS620006

Out of Stock
Aero Precision M5 (.308) Threaded Assembled Receiver Set - Anodized Black - APCS308159

Aero Precision M5 (.308) Threaded Assembled Receiver Set - Anodized Black - APCS308159

Out of Stock
Aero Precision AR15 Threaded Assembled Receiver Set - Anodized Black - APCS100820

Aero Precision AR15 Threaded Assembled Receiver Set - Anodized Black - APCS100820

Out of Stock
Aero Precision M4E1 Threaded Assembled Receiver Set, No Forward Assist - Cerakote FDE - APCS100721

Aero Precision M4E1 Threaded Assembled Receiver Set, No Forward Assist - Cerakote FDE - APCS100721

Out of Stock
Aero Precision M4E1 Threaded Assembled Receiver Set, No Forward Assist - Anodized Black - APCS100720

Aero Precision M4E1 Threaded Assembled Receiver Set, No Forward Assist - Anodized Black - APCS100720

Out of Stock
Aero Precision M4E1 Builder Set with 9" Enhanced Quad Rail Handguard - Anodized Black - APCS100205

Aero Precision M4E1 Builder Set with 9" Enhanced Quad Rail Handguard - Anodized Black - APCS100205

Out of Stock
Aero Precision M5E1 Complete Upper, 16" .308 Mid-Length Barrel w/ 15" Enhanced M-LOK Handguard & Adjustable Gas Block - Kodiak Brown Anodized - APSL100611

Aero Precision M5E1 Complete Upper, 16" .308 Mid-Length Barrel w/ 15" Enhanced M-LOK Handguard & Adjustable Gas Block - Kodiak Brown Anodized - APSL100611

Out of Stock
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