Aero Precision Complete Upper Receiver, M4E1-T, 10.5In, 5.56 Barrel, 9in M-LOK ATLAS S-ONE Handguard, Anodized Black, APAR700302M2

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 M5 Complete Upper Receiver, 22in 6.5 Creedmoor SS Rifle Barrel, W/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538715M46

Aero Precision Complete Upper Receiver, M4E1-E, 5.56x45mm NATO, 13.9In, Government, Mid Length, 1 in 7, 1/2 X 28, 12.7in Enhanced M-LOK HG, A2 Flash Hider, Cerakote, FDE, APAR600284M99

Aero Precision M5 Complete Upper Receiver, 16in .308 Mid SS Barrel, W/ATLAS R-ONE 15in M-LOK Handguard, Anodized, Flat Dark Earth, APAR538715M23

Aero Precision Complete Upper Receiver, M4E1-T, .300, 16In, Blackout Barrel, 15in M-LOK ATLAS S-ONE Handguard, Cerakote, Flat Dark Earth, APAR700315M14

Aero Precision M4E1 Complete Upper Receiver, AR-15, 5.56x45mm NATO, 14.5 in Mid Length Barrel, 12 in Quad Rail Handguard, No BCG/CH, Anodized, Black, APAR640231Q5

Aero Precision Complete Upper Receiver, M4E1, .300 Blackout Barrel EQ-15 HG, No BCG/Charging Handle, Gen 2, FDE Cerakote, 16In, APAR600252Q14

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, RM7.3 Cerakote, FDE, APAR700711M102

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-T Complete Upper Receiver, 5.56Mm, 11.5In, Carbine Length, S-One M-LOK Handguard, FDE, APAR712112M29

Aero Precision M5E1 Complete Upper Reciever, .308, 20in Rifle Barrel, 1-10 Twist, 5/8X24 Thread, Free-Float Handguard, Stainless Steel, Anodized, Black, APAR308554M34

Aero Precision Complete Upper Receiver, M4E1, 14.7In, 5.56 Mid Pencil Barrel, EQ-12 HG Gen 2, Anodized Black, APAR640231Q38

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

Optics Planet Exclusive Aero Precision Complete Upper Receiver, M4E1-T, 8in .300 Blackout BRL, 7in M-LOK ATLAS S-ONE HG, Anodized W/BCG/CH, Black, APAR900001

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

Aero Precision Complete Upper Receiver, M4E1-T, .223, 16in W/ Vortex SPARC Solar Red Dot Sight

Aero Precision M4E1-E EQ15 Complete Upper, 5.56 X 45, 16Inch, HBAR, Mid Length, 1-7 Twist, 1/2 X 28 Thread, Cerakote, FDE, APAR600224Q97

Aero Precision EPC-9 Threaded Complete Upper Receiver, 11in 9Mm, W/ ATLAS R-ONE 10.3in Handguard, FDE, APAR620713M86

Aero Precision M4E1 Complete Upper, .223 Wylde, 16In, Mid Length, 1/8, EM-15 Gen2, A2, Anodize Black, APAR600251M72

Aero Precision M5E1 Complete Upper Reciever, 6.5 CM, 24in Rifle Barrel, 1-8 Twist, 5/8X24 Thread, Free-Float Handguard, Stainless Steel, Cerakote, FDE, APAR308556M47

Aero Precision M4E1-T PRO CHF, M4, 5.56Mm, 14.5 Inch Complete Upper Receiver, Hanson, Mid Length, 1-7 Twist, A2 Birdcage, Anodized, Kodiak Brown, APAR700022D115

Aero Precision M4E1 5.56 Enhanced Upper Receiver, No Forward Assist, FDE Cerakote, APAR612202AC

Aero Precision M4E1 5.56 NATO No Forward Assist Threaded Assembled Upper Receiver, OD Green, APAR712205AC

Aero Precision EPC-9 - 9/40 Enhanced Stripped Upper Receiver W/ LRBHO, Kodiak Brown, APAR620321AC

Aero Precision M5 Threaded Stripped Upper Receiver, Uncoated, APAR308501C