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5.56x45 Gas Impingement Complete Uppers

97-120 of 176 Products
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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
Only 3 Left!
Aero Precision M4E1 Threaded Complete Upper, 16" 5.56 Mid Pencil Length Barrel, 15" M-LOK ATLAS S-ONE Handguard - Anodized Black - APAR700305M39

Aero Precision M4E1 Threaded Complete Upper, 16" 5.56 Mid Pencil Length Barrel, 15" M-LOK ATLAS S-ONE Handguard - Anodized Black - APAR700305M39

$594 99
In Stock
Only 1 Left!
Aero Precision M4E1 Threaded 14.5" 5.56 Mid-Length QPQ No Forward Assist Complete Upper with 13.5" Slimline Handguard - Kodiak Brown Anodized - APSL100753

Aero Precision M4E1 Threaded 14.5" 5.56 Mid-Length QPQ No Forward Assist Complete Upper with 13.5" Slimline Handguard - Kodiak Brown Anodized - APSL100753

$439 99 $534.99
In Stock
Only 3 Left!
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!
Aero Precision AR15 14.5" 5.56 Mid-Length Gov QPQ Barrel Complete Upper 13.5" Slimline Left Handed - Anodized Black - APSL100710

Aero Precision AR15 14.5" 5.56 Mid-Length Gov QPQ Barrel Complete Upper 13.5" Slimline Left Handed - Anodized Black - APSL100710

$399 99 $499.99
In Stock
Only 4 Left!
Foxtrot Mike .223 Wylde ( 5.56 Nato/.223 Rem ) 12.5" Complete Upper, 11.75" M-LOK, Non Reciprocating Forward Charging Handle, BCG - FM556-GEN2-12.5

Foxtrot Mike .223 Wylde ( 5.56 Nato/.223 Rem ) 12.5" Complete Upper, 11.75" M-LOK, Non Reciprocating Forward Charging Handle, BCG - FM556-GEN2-12.5
Out of Stock
Aero Precision M4E1 Threaded 16" 5.56x45mm Mid-Length Complete Upper Receiver with ATALS R-ONE Handguard - Kodiak Brown Anodized - APAR700401M7

Aero Precision M4E1 Threaded 16" 5.56x45mm Mid-Length Complete Upper Receiver with ATALS R-ONE Handguard - Kodiak Brown Anodized - APAR700401M7
Out of Stock
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

Out of Stock
Aero Precision M4E1 Threaded 10.5" 5.56 Carbine Complete Upper with 9.3" ATLAS S-ONE, VG6 Epsilon 556, BREACH Charging Handle, 5.56 BCG - Anodized Black - APSL100415

Aero Precision M4E1 Threaded 10.5" 5.56 Carbine Complete Upper with 9.3" ATLAS S-ONE, VG6 Epsilon 556, BREACH Charging Handle, 5.56 BCG - Anodized Black - APSL100415

Out of Stock
Radical Firearms Complete Upper 16" 5.56 M4 Profile w/ 12" FGS Round Rail

Radical Firearms Complete Upper 16" 5.56 M4 Profile w/ 12" FGS Round Rail
Out of Stock
AR-15 Drop In Ready Enhanced Complete Upper w/ 16" M4 223 - 5.56 Barrel, 12" Free Float Keymod Fore End by Riley Defense

AR-15 Drop In Ready Enhanced Complete Upper w/ 16" M4 223 - 5.56 Barrel, 12" Free Float Keymod Fore End by Riley Defense
Out of Stock
AR-15 Drop In Ready Complete Upper w/ Spiral Fluted Stainless Steel 16" Heavy .223 / 5.56 Barrel, 10" Free Float Keymod and SS-TPI Break - by Riley Defense

AR-15 Drop In Ready Complete Upper w/ Spiral Fluted Stainless Steel 16" Heavy .223 / 5.56 Barrel, 10" Free Float Keymod and SS-TPI Break - by Riley Defense
Out of Stock
Aero Precision AR15 Complete Upper with No Forward Assist 16" 5.56 Mid-Length Barrel, 15" M-LOK ATLAS R-ONE Handguard - Anodized Black - APAR610605M7

Aero Precision AR15 Complete Upper with No Forward Assist 16" 5.56 Mid-Length Barrel, 15" M-LOK ATLAS R-ONE Handguard - Anodized Black - APAR610605M7
Out of Stock
Aero Precision M4E1 Special Edition Thunder Ranch 14.5" 5.56 Mid-Length with 12" Atlas R-ONE Complete Upper Receiver - APAR700754M5

Aero Precision M4E1 Special Edition Thunder Ranch 14.5" 5.56 Mid-Length with 12" Atlas R-ONE Complete Upper Receiver - APAR700754M5
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
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
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 Enhanced 16" 5.56 Mid-Length Complete Upper Receiver with 15" Enhanced Gen 2 M-LOK Handguard- Cerakote FDE - APAR640252M7

Aero Precision M4E1 Enhanced 16" 5.56 Mid-Length Complete Upper Receiver with 15" Enhanced Gen 2 M-LOK Handguard- Cerakote FDE - APAR640252M7
Out of Stock
Aero Precision M4E1 Threaded 11.5" 5.56 Barrel Complete Upper Receiver with 9" M-LOK ATLAS S-ONE Handguard - Anodized Black - APAR700302M29

Aero Precision M4E1 Threaded 11.5" 5.56 Barrel Complete Upper Receiver with 9" M-LOK ATLAS S-ONE Handguard - Anodized Black - APAR700302M29
Out of Stock
Aero Precision M4E1 Threaded 11.5" 5.56 Barrel Complete Upper Receiver with 9" M-LOK ATLAS S-ONE Handguard - Cerakote FDE - APAR700312M29

Aero Precision M4E1 Threaded 11.5" 5.56 Barrel Complete Upper Receiver with 9" M-LOK ATLAS S-ONE Handguard - Cerakote FDE - APAR700312M29
Out of Stock
Aero Precision M4E1 Threaded 11.5" 5.56 Barrel Complete Upper Receiver with 9" M-LOK ATLAS R-ONE Handguard - Cerakote FDE - APAR700712M29

Aero Precision M4E1 Threaded 11.5" 5.56 Barrel Complete Upper Receiver with 9" M-LOK ATLAS R-ONE Handguard - Cerakote FDE - APAR700712M29

Out of Stock
Aero Precision M4E1 Threaded 16" 5.56 Mid-Length No Forward Assist Complete Upper Receiver with 15" M-LOK ATLAS S-ONE Handguard - Cerakote FDE - APAR712115M7

Aero Precision M4E1 Threaded 16" 5.56 Mid-Length No Forward Assist Complete Upper Receiver with 15" M-LOK ATLAS S-ONE Handguard - Cerakote FDE - APAR712115M7
Out of Stock
M4E1 Enhanced 10.5" 5.56 Barrel Complete Upper Receiver with 9" Enhanced Gen 2 M-LOK Handguard - Anodized Black - APAR640221M2

M4E1 Enhanced 10.5" 5.56 Barrel Complete Upper Receiver with 9" Enhanced Gen 2 M-LOK Handguard - Anodized Black - APAR640221M2

Out of Stock
Aero Precision M4E1 Threaded 7.5" 5.56 Complete Upper Receiver with 7" ATLAS S-ONE Handguard - Anodized Black - APAR700301M0

Aero Precision M4E1 Threaded 7.5" 5.56 Complete Upper Receiver with 7" ATLAS S-ONE Handguard - Anodized Black - APAR700301M0

Out of Stock
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