Aero Precision Complete Upper Receiver M4E1-E 10.5in 5.56 Barrel Quantum 9in M-LOK Handguard Anodized Black APAR640102M2

Aero Precision M4E1 Enhanced No Forward Assist Complete Upper Receiver 10.5in 5.56 Carbine EM-9.3 Anodized Black APAR612275M2

Aero Precision M4E1 Enhanced No Forward Assist Complete Upper Receiver 10.5in 5.56 Carbine EM-9.3 Anodized Black APAR612275M2. The M4E1 Enhanced Upper Receiver is a one-piece design combining the handguard mounting platform with the upper receiver... ... more

Aero Precision Complete Upper Receiver M4E1-E 16in 5.56 M4 Barrel Quantum 15in M-LOK Handguard Anodized Black APAR640105M6

Aero Precision Complete Upper Receiver M4E1-E 16in 5.56 M4 Barrel Quantum 15in M-LOK Handguard Anodized Black APAR640105M6. These AR15 Upper Receivers by Aero Precision are designed for M4E1 spec receivers and are precision machined. This Aero... ... more

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-T 10.5in 5.56 Barrel 9in M-LOK ATLAS S-ONE Handguard Cerakote Flat Dark Earth APAR700312M2. The R-ONE handguards are designed with size and weight in mind while still providing plenty of real-estate to... ... more

Midwest Industries 10.5in CARBINE-LENGTH UPPER RECEIVER GROUP M-LOK 5.56 1/7 TWIST BARREL BLACK MI-556CRM9-U

Midwest Industries 10.5in CARBINE-LENGTH UPPER RECEIVER GROUP M-LOK 5.56 1/7 TWIST BARREL BLACK MI-556CRM9-U. 5" CARBINE-LENGTH UPPER RECEIVER GROUP M-LOK 5.56 1:7 BARREL BLACK Specifications for Midwest Industries 10.5in CARBINE-LENGTH UPPER RECEIVER... ... more

Aero Precision M4E1-E Complete Upper 10.5in 5.56 BRL EM-9 Gen2 HG Anodized W/BCG/CH Black APAR900000

Aero Precision M4E1-E Complete Upper 10.5in 5.56 BRL EM-9 Gen2 HG Anodized W/BCG/CH Black APAR900000. 56 Barrel Complete Upper Receiver. While Aero Precision built these AR15 Upper Receivers these specific ones are only available right here at... ... more

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-T 5.56 16in Mid-Length Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700305M7. 56 Mid Pencil Barrel w/ ATLAS S-ONE Handguard Complete Upper Receiver. These AR15 Upper Receivers built by Aero... ... more

Aero Precision M4E1 Complete Upper Receiver 5.56 Barrel w/ FSB EM-7 HG No BCG/Charging Handle Anodized Black 10.5in APAR600211M3

Aero Precision M4E1 Complete Upper Receiver 5.56 Barrel w/ FSB EM-7 HG No BCG/Charging Handle Anodized Black 10.5in APAR600211M3. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip and visual appeal and... ... more

DEMO Aero Precision M4E1 Complete Upper Receiver 5.56 Barrel w/ FSB EM-7 HG No BCG/Charging Handle Anodized Black 10.5in APAR600211M3

DEMO Aero Precision M4E1 Complete Upper Receiver 5.56 Barrel w/ FSB EM-7 HG No BCG/Charging Handle Anodized Black 10.5in APAR600211M3. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip and visual... ... more

Aero Precision M4E1 Threaded No Forward Assist Complete Upper Receiver 10.5in 5.56 Carbine SM9.2 Anodized Black APAR712102M2

Aero Precision M4E1 Threaded No Forward Assist Complete Upper Receiver 10.5in 5.56 Carbine SM9.2 Anodized Black APAR712102M2. The included ATLAS R-ONE Handguard is designed with size and weight in mind while still providing plenty of real-estate to... ... more

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 Complete Upper Receiver M4E1-T 20in 5.56 Rifle Length Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700305M48. Aero Precision built these AR Handguards & Barrels with their ATLAS S-ONE Handguard and 20in 5.56 Rifle length... ... more

Aero Precision M4E1 15in ATLAS R-ONE M-LOK Complete Upper 16in 5.56 HBAR CMV Mid-Length Barrel Anodized Black Black APAR700705M97

Aero Precision M4E1 15in ATLAS R-ONE M-LOK Complete Upper 16in 5.56 HBAR CMV Mid-Length Barrel Anodized Black Black APAR700705M97. Specifications for Aero Precision M4E1 16in 5.56 ATLAS R-ONE M-LOK Complete Upper Receiver with Flash Hider:... ... more

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 5.56 16in Mid-Length Barrel 15in M-LOK ATLAS S-ONE Handguard Cerakote Flat Dark Earth APAR700315M7. 56 Mid Pencil Barrel w/ ATLAS S-ONE Handguard Complete Upper Receiver. These AR15 Upper Receivers built by... ... more

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 S-ONE M-LOK

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 S-ONE M-LOK. Our proprietary ATLAS attachment system is a durable and dependable mounting platform maintaining a slim... ... more

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 15in ATLAS S-ONE M-LOK Complete Upper 16in 5.56 HBAR CMV Mid-Length Barrel Anodized Black APAR700105M97. Specifications for Aero Precision M4E1 16in 5.56 ATLAS S-ONE M-LOK Complete Upper Receiver with Flash Hider: Manufacturer: Aero... ... more

Aero Precision M4E1 Complete Upper Receiver 5.56 Barrel w/ FSB EQ-7 HG No BCG/Charging Handle Anodized Black 10.5in APAR600211Q3

Aero Precision M4E1 Complete Upper Receiver 5.56 Barrel w/ FSB EQ-7 HG No BCG/Charging Handle Anodized Black 10.5in APAR600211Q3. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip and visual appeal and... ... more

Aero Precision M4E1-E EQ15 Complete Upper 5.56 x 45 16inch HBAR Mid Length 1-7 Twist 1/2 x 28 Thread Anodized Black APAR600206Q97

Aero Precision M4E1-E EQ15 Complete Upper 5.56 x 45 16inch HBAR Mid Length 1-7 Twist 1/2 x 28 Thread Anodized Black APAR600206Q97. 56 x 45 Complete Upper then you have arrived at the right place.. These AR15 Upper Receivers through the professional... ... more

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 11.5in 5.56 Barrel 9in M-LOK ATLAS R-ONE Handguard Anodized Black

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 11.5in 5.56 Barrel 9in M-LOK ATLAS R-ONE Handguard Anodized Black. By combining our lightest handguards and barrel profiles with the No Forward Assist Upper Receiver you... ... more

Aero Precision Complete Upper M4E1-E 5.56 8in Pistol Barrel EM7.3 Cerakote FDE APAR640270M102

Aero Precision Complete Upper M4E1-E 5.56 8in Pistol Barrel EM7.3 Cerakote FDE APAR640270M102. 56 Complete Upper with Flash Hider then you have arrived at the absolute right place.. These AR15 Upper Receivers through the skilled product specialists at... ... more

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 11.5in 5.56 Barrel 9in M-LOK ATLAS S-ONE Handguard Anodized Black

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 11.5in 5.56 Barrel 9in M-LOK ATLAS S-ONE Handguard Anodized Black. By combining our lightest handguards and barrel profiles with the No Forward Assist Upper Receiver you... ... more

Aero Precision Complete Upper w/ No Forward Assist M4E1-T 5.56 8in 5.56 Pistol Barrel RM7.3 Anodized Black APAR712701M102

Aero Precision Complete Upper w/ No Forward Assist M4E1-T 5.56 8in 5.56 Pistol Barrel RM7.3 Anodized Black APAR712701M102. 56 Complete Upper with Flash Hider w/ No Forward Assist then you've found yourself in the right spot.. These AR15 Upper Receivers... ... more

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

Aero Precision M4E1 15in Enhanced M-LOK Complete Upper 16in 5.56 HBAR CMV Mid-Length Barrel Anodized Black APAR600218M97. This is a streamlined design that only needs eight screws to mount a free-floating handguard making these AR15 Upper Receivers a... ... more

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

Aero Precision M4E1 Threaded No Forward Assist Complete Upper Receiver 10.5in 5.56 Carbine RM9.2 FDE APAR712712M2. The included ATLAS R-ONE Handguard is designed with size and weight in mind while still providing plenty of real-estate to accommodate... ... more

Aero Precision M4E1 Threaded No Forward Assist Complete Upper Receiver 10.5in 5.56 Carbine SM9.2 FDE APAR712112M2

Aero Precision M4E1 Threaded No Forward Assist Complete Upper Receiver 10.5in 5.56 Carbine SM9.2 FDE APAR712112M2. The included ATLAS R-ONE Handguard is designed with size and weight in mind while still providing plenty of real-estate to accommodate... ... more

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

Aero Precision M4E1 Enhanced No Forward Assist Complete Upper Receiver 10.5in 5.56 Carbine EM-9.3 FDE APAR612276M2. The M4E1 Enhanced Upper Receiver is a one-piece design combining the handguard mounting platform with the upper receiver itself. Through... ... more

Aero Precision Complete Upper Receiver M4E1 10.5in 5.56 Barrel w/ FSB EQ-7 HG Gen 2 FDE Cerakote APAR640212Q3

Aero Precision Complete Upper Receiver M4E1 10.5in 5.56 Barrel w/ FSB EQ-7 HG Gen 2 FDE Cerakote APAR640212Q3. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip and visual appeal and a new profile for... ... more

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 10.5in 5.56 Barrel w/ FSB EM-7 HG Gen 2 FDE Cerakote APAR640212M3. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip and visual appeal and a new profile for... ... more

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 10.5in 5.56 Barrel 9in M-LOK ATLAS R-ONE Handguard Anodized Black

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 10.5in 5.56 Barrel 9in M-LOK ATLAS R-ONE Handguard Anodized Black. These complete upper receivers from Aero Precision are just the thing you need The hardcoat anodized... ... more

Aero Precision Complete Upper Receiver M4E1-E 16in .223 Wylde SS Mid Barrel Quantum 12in M-LOK Handguard Flat Dark Earth APAR640114M9

Aero Precision Complete Upper Receiver M4E1-E 16in .223 Wylde SS Mid Barrel Quantum 12in M-LOK Handguard Flat Dark Earth APAR640114M9. Key features include the addition of built in anti-rotation tabs removable 4-slot picatinny rail section for front... ... more

Aero Precision Complete Upper Receiver M4E1-E 16in 5.56 Mid Barrel Quantum 15in M-LOK Handguard Anodized Black APAR640105M7

Aero Precision Complete Upper Receiver M4E1-E 16in 5.56 Mid Barrel Quantum 15in M-LOK Handguard Anodized Black APAR640105M7. These AR15 Upper Receivers by Aero Precision are designed for M4E1 spec receivers and are precision machined. This Aero... ... more

Aero Precision Complete Upper Receiver M4E1-T 5.56 16in Mid-Length Barrel 12in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700304M7

Aero Precision Complete Upper Receiver M4E1-T 5.56 16in Mid-Length Barrel 12in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700304M7. 56 Mid Pencil Barrel w/ ATLAS S-ONE Handguard Complete Upper Receiver. These AR15 Upper Receivers built by Aero... ... more

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 11in M-LOK Free Float Hand Guard Flash

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 11in M-LOK Free Float Hand Guard Flash. 56 Complete Upper Receiver w/Pistol Lower Parts Kit is the perfect item for those looking to create a... ... more

Troy Upper Receiver Kit 10.5in Barrel M-LOK Handguard 9in A3 Black SUPG-A3M-10BT-00

Troy Upper Receiver Kit 10.5in Barrel M-LOK Handguard 9in A3 Black SUPG-A3M-10BT-00. The Troy Upper Receiver Kit with M-LOK BattleRail is an excellent option as it is designed to remain consistent even after heavy use. Made from strong durable... ... more

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 11in M-LOK Free Float Hand Guard Flash

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 11in M-LOK Free Float Hand Guard Flash. 56 Complete Upper Receiver w/Pistol Lower Parts Kit is the perfect item for those looking to create a... ... more

Aero Precision Complete Upper Receiver M4E1 16in 5.56 Mid Pencil Barrel EM-12 HG Gen 2 FDE Cerakote APAR640232M39

Aero Precision Complete Upper Receiver M4E1 16in 5.56 Mid Pencil Barrel EM-12 HG Gen 2 FDE Cerakote APAR640232M39. This is a streamlined design that only needs eight screws to mount a free-floating handguard making these AR15 Upper Receivers a more... ... more

Aero Precision Complete Upper M4E1-E 5.56 20in Rifle Barrel 1/7 Twist EQ15 Black APAR640251M48

Aero Precision Complete Upper M4E1-E 5.56 20in Rifle Barrel 1/7 Twist EQ15 Black APAR640251M48. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip and visual appeal and a new profile for the picatinny... ... more

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 Receiver M4E1-T 5.56 16in M4 Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700305M6. Specifications for Aero Precision M4E1 16in 5.56 ATLAS S-ONE M-LOK Complete Upper Receiver with Flash Hider: Manufacturer:... ... more

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

Aero Precision Complete Upper Receiver M4E1-T 5.56 16in M4 Barrel 12in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700304M6. Specifications for Aero Precision M4E1 16in 5.56 ATLAS S-ONE M-LOK Complete Upper Receiver with Flash Hider: Manufacturer:... ... more