Aero Precision M4E1-E Complete Upper, 14.5in 5.56 M4 Carbine Barrel, EM-12 Handguard Gen 2 Cerakote, Flat Dark Earth, APAR640232M32

Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in Quad Rail Handguard, No BCH/CH, Magpul Cerakote, Flat Dark Earth, APAR640222Q2

Aero Precision Complete Upper Receiver W/Flash Hider, M4E1, .300 Barrel EQ-9 HG, No BCG/Charging Handle, Gen 2, FDE Cerakote, 10In, APAR600222Q4

Aero Precision M4E1 Complete Upper Receiver, AR-15, 18 in Rifle Length Barrel, 15 in Quad Rail Handguard, No BCH/CH, Anodized, Black, APAR640251Q8

Aero Precision M4E1 Enhanced No Forward Assist Complete Upper Receiver, 10.5in 5.56 Carbine, EM-9.3, FDE, APAR612276M2

Aero Precision M4E1-T Complete Upper Receiver, 5.56Mm, 12.5In, Carbine Length, R-One M-LOK Handguard, FDE, APAR712713M30

Aero Precision Threaded Upper Receiver, M4E1, 5.56, 11.5 Inch Barrel, 9 Inch M-LOK ATLAS S-ONE Handguard, A2 Flash Hider, Anodized Black, APAR700302M29

Aero Precision M4E1 Complete Upper Receiver 5.56 Mid Barrel EM-12 HG, No BCG/Charging Handle, Anodized Black, 14.5In, APAR600231M5

Aero Precision M4E1 Threaded No Forward Assist Complete Upper Receiver, 10.5in 5.56 Carbine, RM9.2, FDE, APAR712712M2

Aero Precision M4E1 Enhanced Upper Receiver 5.56 NATO

Aero Precision M4E1 Complete Upper Receiver, 16In, 5.56, M4, Carbine Barrel, EM-15 HG Gen 2, FDE Cerakote, APAR640252M6

Aero Precision Complete Upper Receiver, M4E1-T, .223, 18In, Wylde Barrel, 15in M-LOK ATLAS S-ONE Handguard, Anodized Black, APAR700305M42

Aero Precision Complete Upper Receiver, M4E1-T, SM-15, 5.56x45mm NATO, 16In, Government, Mid Length, 1 in 7, 1/2 X 28, 15In, A2 Flash Hider, Anodized, Kodiak Brown, APAR700392M7

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver, 16In, Mid Length Pencil Barrel, 1-7 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, Black Anodized, APAR700705M39

Aero Precision M4E1 Threaded .300 Blackout Complete Upper Receiver, 16In, 1-7 Twist, A2 Flash Hider, 5/8X24 Thread, ATLAS R-ONE Handguard, Black Anodized, APAR700705M14

Aero Precision Complete Upper Receiver, M4E1-T, 5.56, 16In, Mid-Length Barrel, 15in M-LOK ATLAS S-ONE Handguard, Cerakote, Flat Dark Earth, APAR700315M7

Aero Precision Complete Upper Receiver, M4E1-T, 7.5In, 5.56 Barrel, 7in M-LOK ATLAS S-ONE Handguard, Cerakote, Flat Dark Earth, APAR700311M0

Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, M4 Profile, 1-7 Twist, 1/2X28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M67

Aero Precision Complete Upper Receiver, M4E1, 10.5In, 5.56 Barrel W/ FSB, EM-7 HG Gen 2, FDE Cerakote, APAR640212M3

Aero Precision Complete Upper Receiver, M4E1-E, 18In, .223 Wylde Fluted Barrel, EM-15 Handguard Gen 2 Cerakote, Flat Dark Earth, APAR640252M51

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver, 16In, M4 Barrel, 1-7 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, Black Anodized, APAR700705M6

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver, 10,5In, M4 Barrel, 1-7 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, Black Anodized, APAR700702M2

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver, 14,5In, Mid-Length Barrel, 1-7 Twist, 1/2X28 Thread, ATLAS R-ONE Handguard, FDE Cerakote, APAR700714M5

Aero Precision Complete Upper Receiver, M4E1-T, 5.56, 16In, M4 Barrel, 15in M-LOK ATLAS S-ONE Handguard, Anodized Black, APAR700305M6

Aero Precision Complete Upper, M4E1-T, 5.56, 8In, Pistol Barrel, SM7.3 Cerakote, FDE, APAR700111M102

Aero Precision M4E1 Threaded .300 Blackout Complete Upper Receiver, 8In, 1-7 Twist, 5/8X24 Thread, ATLAS R-ONE Handguard, Black Anodized, APAR700701M1

Aero Precision Complete Upper Receiver, M4E1-T, 5.56x45mm NATO, 20In, Government, Rifle Length, 1 in 7, 1/2 X 28, 15In, A2 Flash Hider, Cerakote, FDE, APAR700715M48

Aero Precision Complete Upper Receiver, M4E1-T, .223, 16In, Wylde Barrel, 15in M-LOK ATLAS S-ONE Handguard, Cerakote, Flat Dark Earth, APAR700315M9

Aero Precision Complete Upper Receiver, M4E1-T, 5.56x45mm NATO, 16In, Government, Mid Length, 1 in 7, 1/2 X 28, 12.7In, A2 Flash Hider, Cerakote, FDE, APAR700714M7

Aero Precision M4E1-T Complete Upper Receiver, .300 AAC Blackout, 8In, Pistol Length, R-One M-LOK Handguard, Black, APAR712701M1

Aero Precision Complete Upper Receiver, M4E1-T, 10in .300 Blackout Barrel, 9in M-LOK ATLAS S-ONE Handguard, Cerakote, Flat Dark Earth, APAR700312M4

Aero Precision M4E1 Threaded Assembled Upper Receiver, M16/AR-15, Magpul Cerakote, OD Green, APAR700417AC

Aero Precision M4E1-E EM15 Complete Upper, 5.56 X 45, 16Inch, HBAR, Mid Length, 1-7 Twist, 1/2 X 28 Thread, Cerakote, FDE, APAR600294M97

Aero Precision Complete Upper Receiver, M4E1-T, 5.56x45mm NATO, 11.5In, Government, Carbine Length, 1 in 7, 1/2 X 28, 10.3In, A2 Flash Hider, Anodized, OD Green, APAR700396M29

Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in M-LOK Handguard, No BCH/CH, Magpul Cerakote, Flat Dark Earth, APAR640222M2

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver, 16In, Mid-Length Barrel, 1-7 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, FDE Cerakote, APAR700715M7