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, 18In, 5.56 Rifle Length Barrel, 15in M-LOK ATLAS S-ONE Handguard, Anodized Black, APAR700305M8

Aero Precision M5 Complete Upper Receiver, 18in 6.5 Creedmoor SS Mid-Length Barrel, W/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538715M44

Aero Precision Complete Upper Receiver, M4E1-T, 14.5In, 5.56 Carbine Length Barrel, 12in M-LOK ATLAS S-ONE Handguard, Flat Dark Earth, APAR700314M32

Aero Precision M5E1 Complete Upper Reciever, .308, 18in Rifle Barrel, 1-10 Twist, 5/8X24 Thread, Free-Float Handguard, Cerakote, FDE, APAR308556M25

Aero Precision Complete Upper Receiver, M4E1-T, 5.56, 16In, M4 Barrel, 12in M-LOK ATLAS S-ONE Handguard, Anodized Black, APAR700304M6

Aero Precision AR-15 Complete Upper Receiver, 5.56, Carbine Length, 16 Inch Barrel W/Pinned FSB, Magpul MOE SL Handguard, A2 Flash Hider, Anodized Black, APAR502505M64

Aero Precision M4E1 Threaded .300 Blackout Complete Upper Receiver, 10In, 1-7 Twist, 5/8X24 Thread, ATLAS R-ONE Handguard, Black Anodized, APAR700702M4

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 Complete Upper Receiver, M4E1-T, 5.56, 16In, Mid-Length Barrel, 15in M-LOK ATLAS S-ONE Handguard, Anodized Black, APAR700305M7

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 Complete Upper Receiver, M4E1-T, 10.5In, 5.56 Barrel, 9in M-LOK ATLAS S-ONE Handguard, Cerakote, Flat Dark Earth, APAR700312M2

Aero Precision Complete Upper Receiver, M4E1, 16In, 5.56 Mid Pencil Barrel, EM-15 HG Gen 2, Anodized Black, APAR640251M39

Aero Precision AR-15 Complete Upper Receiver, 5.56, Carbine Length, 10.5 Inch Barrel W/Pinned FSB, Magpul MOE Handguard, A2 Flash Hider, Anodized Black, APAR502503M3

Aero Precision Anodized Black AR15 Stripped Upper Receiver, Multi-Caliber 7075-T6 Aluminum, Black Anodized, APAR501603C

Aero Precision Complete Upper Receiver, M4E1-T, 5.56x45mm NATO, 16In, Government, Carbine Length, 1 in 7, 1/2 X 28, 12.7In, A2 Flash Hider, Anodized, Black, APAR700704M6

Aero Precision Complete Upper Receiver, M4E1, .223 Wylde Mid Barrel EQ-12 HG, No BCG/Charging Handle, Gen 2, FDE Cerakote, 16In, APAR600232Q9

Aero Precision M5 Complete Upper Receiver, 20in .308 SS Rifle Barrel, W/ATLAS S-ONE 15in M-LOK Handguard, Anodized, Black, APAR538105M34

Aero Precision M4E1-T PRO CHF, M4, 5.56Mm, 11.5 Inch Complete Upper Receiver, Hanson, Carbine Length, 1-7 Twist, A2 Birdcage, Anodized, OD Green, APAR700015D113

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 Upper Receiver Assembled, AR-15, M-LOK Handguard, Ceracote, Sniper Grey, APAR501812AC

Aero Precision M5 Complete Upper Receiver, 18in 6.5 Creedmoor SS Mid-Length Barrel, W/ATLAS S-ONE 15in M-LOK Handguard, Anodized, Black, APAR538105M44

Aero Precision Complete Upper Receiver, M4E1-T, RM-15, 5.56x45mm NATO, 16In, Government, Mid Length, 1 in 7, 1/2 X 28, 15In, A2 Flash Hider, Anodized, Kodiak Brown, APAR700401M7

Aero Precision M5 Complete Upper Receiver, 16in .308 CMV Mid Barrel, W/ATLAS S-ONE 12in M-LOK Handguard, Anodized, Black, APAR538104M22

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 M5 Complete Upper Receiver, 16in .308 Mid SS Barrel, W/ATLAS R-ONE 12in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538714M23

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-T PRO CHF, M4, 5.56Mm, 11.5 Inch Complete Upper Receiver, Hanson, Carbine Length, 1-7 Twist, A2 Birdcage, Anodized, Black, APAR700005D113

Aero Precision M5 Complete Upper Receiver, 20in 6.5 Creedmoor SS Rifle Barrel, W/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538715M45

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver, 16In, M4 Barrel, 1-7 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, FDE Cerakote, APAR700715M6

Aero Precision M5E1 .308 Enhanced Upper Receiver,Anodized, Black, APAR308504AC

Aero Precision M5 Complete Upper Receiver, 16in .308 Mid Barrel, W/ATLAS R-ONE 12in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538714M22

Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver, 18In, Fluted Barrel, 1-8 Twist, A2 Flash Hider, ATLAS R-ONE Handguard, Black Anodized, APAR700705M51

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

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