Aero Precision Complete Upper M4E1-E .223 Wylde 18in Mid-Length EQ15 Anodized Black APAR600251Q73

Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 16In, SS QPQ Mid-Length Barrel, 1-8 Twist, A2 Flash Hider, 15in M-LOK ATLAS R-ONE Handguard, Black Anodized, APAR700705M72

Aero Precision M4E1 Threaded Stripped Upper Receiver, No Forward Assist, Anodized Black, APAR712201C

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

Aero Precision Complete Upper Receiver, M4E1, .223 Wylde Mid Barrel EM-12 HG, No BCG/Charging Handle, Gen 2, Anodized Black, 16In, APAR600231M9

Aero Precision Threaded Upper Receiver, M4E1, 5.56, 11.5 Inch Barrel, 9 Inch M-LOK ATLAS R-ONE Handguard, A2 Flash Hider, Anodized Black, APAR700702M29

Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 16In, SS QPQ Mid-Length Barrel, 1-8 Twist, A2 Flash Hider, 15in M-LOK ATLAS R-ONE Handguard, FDE Cerakote, APAR700715M72

Aero Precision M4E1 Mid Barrel Complete Upper Receiver W/Flash Hider, AR-15, 5.56x45mm NATO, 16in Mid Length Barrel, 12in M-LOK Handguard, No BCG/CH, Magpul Cerakote, Flat Dark Earth, APAR640232M7

Aero Precision M4E1 15in ATLAS S-ONE M-LOK Complete Upper, 16in 5.56 HBAR CMV Mid-Length Barrel, Anodized Black, APAR700105M97

Aero Precision M4E1 Assembled Upper Receiver, Thread, M-LOK Handguard, Anodized, Brown, APAR700222AC

Aero Precision M4E1-T Complete Upper Receiver, 5.56Mm, 12.5In, Carbine Length, S-One M-LOK Handguard, Black, APAR712102M30

Aero Precision M4E1 Threaded .223 Wylde W/ ATLAS R-ONE Handguard Complete Upper Receiver, 18 Inch Barrel, 1-8 Twist, A2 Flash Hider, Magpul Cerakote, Flat Dark Earth, APAR700716M76

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 M4E1-T Complete Upper Receiver, .300 AAC Blackout, 8In, Pistol Length, S-One M-LOK Handguard, Black, APAR712101M1

Aero Precision Complete Upper Receiver, M4E1-E, 5.56x45mm NATO, 20In, Government, Rifle Length, 1 in 7, 1/2 X 28, 15In, A2 Flash Hider, Cerakote, FDE, APAR640252M48

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver, 18In, 1-7 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, Black Anodized, APAR700705M8

Aero Precision Complete Upper Receiver, M4E1-T, 5.56, 16In, M4 Barrel, 15in M-LOK ATLAS S-ONE Handguard, Cerakote, Flat Dark Earth, APAR700315M6

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 5.56mm Complete Upper Receiver, 14,5In, Mid-Length Barrel, 1-7 Twist, 1/2X28 Thread, ATLAS R-ONE Handguard, W/VG6 Precision Gamma 556 SL, Black Anodized, APAR700704M5V38

Aero Precision Complete Upper Receiver, M4E1-T, 10in .300 Blackout Barrel, 9in M-LOK ATLAS S-ONE Handguard, Anodized Black, APAR700302M4

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, 14.5In, 5.56 Mid Barrel, 12in M-LOK ATLAS S-ONE Handguard, Flat Dark Earth, APAR700314M5

Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56, 11.5In, Carbine Length, 1-7 Twist, 10.3in ATLAS S-ONE Handguard, A2 Flash Hider, Cerakote, OD Green, APAR700389M29

Aero Precision Complete Upper, M4E1-E, .223 Wylde, 16In, Mid-Length, EQ15 Anodized, Black, APAR600251Q72

Aero Precision Complete Upper Receiver, M4E1-T, .223, 16In, Wylde Fluted Barrel, 15in M-LOK ATLAS S-ONE Handguard, Cerakote, Flat Dark Earth, APAR700315M50

Aero Precision M4E1 Assembled Upper Receiver, Thread, M-LOK Handguard, Anodized, OD Green, APAR700220AC

Aero Precision M4E1 Threaded Complete Upper Receiver, 5.56 NATO, 14.5 in Barrel, Government Profile, 1-7 Twist, 1/2X28 Thread, 12 in ATLAS R-ONE M-LOK Handguard, Black, APAR700704M68

Aero Precision M4E1 15in Enhanced M-LOK Complete Upper, 16in 5.56 HBAR CMV Mid-Length Barrel, Anodized Black, APAR600218M97

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, 20in 5.56 Rifle Length Barrel, 15in M-LOK ATLAS S-ONE Handguard, Anodized Black, APAR700305M48

Aero Precision M4E1 Complete Upper Receiver, 18In, .223 Wylde Rifle Barrel, EM-15 HG Gen 2, Anodized, Black, APAR640251M42

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, 5.56, 16In, M4 Barrel, 15in M-LOK ATLAS S-ONE Handguard, Anodized Black, APAR700305M6

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver, 14,5In, Mid-Length Barrel, 1-7 Twist, 1/2X28 Thread, ATLAS R-ONE Handguard, Black Anodized, APAR700704M5

Aero Precision M4E1 Complete Upper Receiver, AR-15, 5.56x45mm NATO, 14.5 in Mid Length Barrel, 12 in M-LOK Handguard, No BCG/CH, Magpul Cerakote, Flat Dark Earth, APAR640232M5

Aero Precision M4E1-E Complete Upper, 14.5in 5.56 M4 Carbine Barrel, EQ-12 Handguard Gen 2, Anodized Black, APAR640231Q32