Aero Precision AR15 Complete Upper 16in 5.56 M4 Carbine Barrel w/ Pinned FSB M4 Handguard Includes BCG & CH Anodized Black APAR505721

Aero Precision AR15 Complete Upper Receiver 16in 5.56 Mid-Length Barrel w/ Pinned Front Sight Base M4 Handguard Black APAR505631

Aero Precision AR15 Complete Upper Receiver 16in 5.56 Mid-Length Barrel w/ Pinned Front Sight Base M4 Handguard Black APAR505631. 56 NATO complete upper receiver from Aero Precision. These Mil-Spec AR15 Upper Receivers are built from tough 4150 Chrome... ... 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 AR15 Complete Upper Receiver 16in 5.56 Carbine Barrel w/ Pinned Front Sight Base M4 Handguard Black APAR505621

Aero Precision AR15 Complete Upper Receiver 16in 5.56 Carbine Barrel w/ Pinned Front Sight Base M4 Handguard Black APAR505621. 56 NATO complete upper receiver from Aero Precision. These Mil-Spec AR15 Upper Receivers are built from tough 4150 Chrome... ... more

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

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. These AR15 Upper Receivers from the innovators at Aero Precision feature a 5.56 barrel that is chambered... ... more

Aero Precision AR-15 Complete Upper Receiver 5.56 Mid-Length 16 inch Barrel w/Pinned FSB Magpul MOE SL Handguard A2 Flash Hider Anodized Black

Aero Precision AR-15 Complete Upper Receiver 5.56 Mid-Length 16 inch Barrel w/Pinned FSB Magpul MOE SL Handguard A2 Flash Hider Anodized Black. These AR15 Upper Receivers from the innovators at Aero Precision feature a 5.56 barrel that is chambered for... ... more

Aero Precision AR-15 Complete Upper Receiver 5.56 Mid-Length 16 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider Anodized Black

Aero Precision AR-15 Complete Upper Receiver 5.56 Mid-Length 16 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider Anodized Black. 56 Rifle Length Barrel w/ Pinned FSB and Magpul MOE Rifle Length Handguard Specifications for Aero Precision... ... more

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

Aero Precision M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EM-15 HG Gen 2 FDE Cerakote APAR640252M6. 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 AR-15 Complete Upper Receiver 5.56 Carbine Length 16 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider Anodized Black

Aero Precision AR-15 Complete Upper Receiver 5.56 Carbine Length 16 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider Anodized Black. 56 Rifle Length Barrel w/ Pinned FSB and Magpul MOE Rifle Length Handguard Specifications for Aero... ... more

Aero Precision AR-15 Complete Upper Receiver 5.56 Carbine Length 10.5 inch Barrel w/Pinned FSB Magpul MOE SL Handguard A2 Flash Hider FDE Cerakote

Aero Precision AR-15 Complete Upper Receiver 5.56 Carbine Length 10.5 inch Barrel w/Pinned FSB Magpul MOE SL Handguard A2 Flash Hider FDE Cerakote. 5" 5.56 Rifle Length Barrel w/ Pinned FSB and Magpul MOE Rifle Length Handguard Specifications for Aero... ... more

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

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. 5" 5.56 Rifle Length Barrel w/ Pinned FSB and Magpul MOE Rifle Length Handguard Specifications for Aero... ... more

Aero Precision AR-15 Complete Upper Receiver 5.56 Carbine Length 10.5 inch Barrel w/Pinned FSB Magpul MOE SL Handguard A2 Flash Hider Anodized Black

Aero Precision AR-15 Complete Upper Receiver 5.56 Carbine Length 10.5 inch Barrel w/Pinned FSB Magpul MOE SL Handguard A2 Flash Hider Anodized Black. 5" 5.56 Rifle Length Barrel w/ Pinned FSB and Magpul MOE Rifle Length Handguard Specifications for... ... more

Aero Precision M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EQ-15 Gen 2 HG FDE Cerakote APAR640252Q6

Aero Precision M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EQ-15 Gen 2 HG FDE Cerakote APAR640252Q6. 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 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 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EM-12 HG Gen 2 Anodized Black APAR640231M6

Aero Precision M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EM-12 HG Gen 2 Anodized Black APAR640231M6. 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 AR-15 Complete Upper Receiver 5.56 Mid-Length 16 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider FDE Cerakote

Aero Precision AR-15 Complete Upper Receiver 5.56 Mid-Length 16 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider FDE Cerakote. 56 Rifle Length Barrel w/ Pinned FSB and Magpul MOE Rifle Length Handguard Specifications for Aero Precision AR15... ... more

Aero Precision 5.56 CMV Barrel w/ Pinned FSB 16in Carbine Length 1-7 Twist 1/2-28 Threaded Anodized Black APRH100434

Aero Precision 5.56 CMV Barrel w/ Pinned FSB 16in Carbine Length 1-7 Twist 1/2-28 Threaded Anodized Black APRH100434. 56 CMV Barrel w/ Pinned FSB Carbine Length (C) Specifications for Aero Precision 5.56 CMV Barrel w/ Pinned FSB: Manufacturer: Aero... ... more

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

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. 5in 5.56 w/ ATLAS S-ONE w/ A2 Flash Hider Handguard Complete Upper Receiver. Each of these AR15 Upper... ... more

Aero Precision M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EQ-12 HG Gen 2 FDE Cerakote APAR640232Q6

Aero Precision M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EQ-12 HG Gen 2 FDE Cerakote APAR640232Q6. 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 AR15 Complete Upper Receiver 20in 5.56 Rifle Length Barrel w/ Pinned Front Sight Base & A2 Handguard Black APAR505611

Aero Precision AR15 Complete Upper Receiver 20in 5.56 Rifle Length Barrel w/ Pinned Front Sight Base & A2 Handguard Black APAR505611. 56 Barrel w/ Pinned FSB A2 Handguard and A2 Detachable Carry Handle. Specifications for Aero Precision AR15 20in 5.56... ... more

Aero Precision M4E1-T SM10.3 5 Complete Upper 5.56 x 45 12.5inch Government Carbine 1-7 Twist 1/2 x 28 Thread Cerakote FDE APAR700113M30

Aero Precision M4E1-T SM10.3 5 Complete Upper 5.56 x 45 12.5inch Government Carbine 1-7 Twist 1/2 x 28 Thread Cerakote FDE APAR700113M30. 3 5.56 x 45 Complete Upper then you've found yourself in the absolute right location.. These AR15 Upper Receivers... ... more

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 Complete Upper Receiver M4E1-T 14.5in 5.56 Carbine Length Barrel 12in M-LOK ATLAS S-ONE Handguard Flat Dark Earth APAR700314M32. The S-ONE line of handguards are designed with size and weight in mind providing the perfect addition to... ... more

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

Aero Precision M4E1-E Complete Upper 14.5in 5.56 M4 Carbine Barrel EQ-12 Handguard Gen 2 Anodized Black APAR640231Q32. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip and visual appeal and a new... ... more

Aero Precision AR-15 Complete Upper Receiver 5.56 Rifle Length 20 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider Anodized Black

Aero Precision AR-15 Complete Upper Receiver 5.56 Rifle Length 20 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider Anodized Black. 56 Rifle Length Barrel w/ Pinned FSB and Magpul MOE Rifle Length Handguard Specifications for Aero Precision... ... more

Aero Precision AR-15 Complete Upper Receiver 5.56 Rifle Length 20 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider FDE Cerakote

Aero Precision AR-15 Complete Upper Receiver 5.56 Rifle Length 20 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider FDE Cerakote. 56 Rifle Length Barrel w/ Pinned FSB and Magpul MOE Rifle Length Handguard Specifications for Aero Precision... ... 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

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 Complete Upper Receiver M4E1-T 5.56 16in M4 Barrel 15in M-LOK ATLAS S-ONE Handguard Cerakote Flat Dark Earth APAR700315M6. Specifications for Aero Precision M4E1 16in 5.56 ATLAS S-ONE M-LOK Complete Upper Receiver with Flash Hider:... ... more

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel NJ Compliant M4 Profile 1-7 Twist 1/2 x 28 Thread Compensator Black STAG15101113

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel NJ Compliant M4 Profile 1-7 Twist 1/2 x 28 Thread Compensator Black STAG15101113. Made to mil-spec standards this upper satisfies the need for a standard GI carbine. Featuring a 5.56x45mm... ... more

Spikes Tactical Upper 5.56 16in M4 LE w/BLK MOE Handguard & FSP STU5025-MOS

Spikes Tactical Upper 5.56 16in M4 LE w/BLK MOE Handguard & FSP STU5025-MOS. 56 M4 Carbine 16in Forged Upper Receiver right into your current build to create a powerful and reliable firearm for sport shooting self-defense or tactical needs. These AR15... ... more

Spikes Tactical Upper 5.56 16in M4 LE w/MOE BLK SL Handguard STU5025-SLB

Spikes Tactical Upper 5.56 16in M4 LE w/MOE BLK SL Handguard STU5025-SLB. 56 M4 Carbine 16in Forged Upper Receiver right into your current build to create a powerful and reliable firearm for sport shooting self-defense or tactical needs. These AR15... ... more

Aero Precision RM10.3 M4E1-T Complete Upper w/11.5in 5.56 Barrel FDE APAR700713M29

Aero Precision RM10.3 M4E1-T Complete Upper w/11.5in 5.56 Barrel FDE APAR700713M29. The R-ONE line of handguards are designed with size and weight in mind providing the perfect addition to your lightweight build. Our proprietary ATLAS attachment system... ... more

Aero Precision SM10.3 M4E1-T Complete Upper w/11.5in 5.56 Barrel FDE APAR700113M29

Aero Precision SM10.3 M4E1-T Complete Upper w/11.5in 5.56 Barrel FDE APAR700113M29. The S-ONE line of handguards are designed with size and weight in mind providing the perfect addition to your lightweight build. Our proprietary ATLAS attachment system... ... more

Aero Precision 5.56 CMV Barrel w/ Pinned FSB 16in Mid-Length 1-7 Twist 1/2-28 Threaded Anodized Black APRH100438

Aero Precision 5.56 CMV Barrel w/ Pinned FSB 16in Mid-Length 1-7 Twist 1/2-28 Threaded Anodized Black APRH100438. 56 CMV Barrel w/ Pinned FSB Carbine Length (C) Specifications for Aero Precision 5.56 CMV Barrel w/ Pinned FSB: Manufacturer: Aero... ... more

Spikes Tactical Upper 5.56 16in M4 LE w/MOE Grey SL Handguard STU5025-SLG

Spikes Tactical Upper 5.56 16in M4 LE w/MOE Grey SL Handguard STU5025-SLG. 56 M4 Carbine 16in Forged Upper Receiver right into your current build to create a powerful and reliable firearm for sport shooting self-defense or tactical needs. These AR15... ... more

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 16in 5.56 Mid-Length Barrel 15in M-LOK ATLAS R-ONE Handguard Anodized

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 16in 5.56 Mid-Length Barrel 15in M-LOK ATLAS R-ONE Handguard Anodized. By combining our lightest handguards and barrel profiles with the No Forward Assist Upper Receiver... ... more

Spikes Tactical Upper 5.56 16in M4 LE w/MOE FDE SL Handguard STU5025-SLF

Spikes Tactical Upper 5.56 16in M4 LE w/MOE FDE SL Handguard STU5025-SLF. 56 M4 Carbine 16in Forged Upper Receiver right into your current build to create a powerful and reliable firearm for sport shooting self-defense or tactical needs. These AR15... ... more

Aero Precision AR-15 Complete Upper Receiver 5.56 Carbine Length 10.5 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider FDE Cerakote

Aero Precision AR-15 Complete Upper Receiver 5.56 Carbine Length 10.5 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider FDE Cerakote. 5" 5.56 Rifle Length Barrel w/ Pinned FSB and Magpul MOE Rifle Length Handguard Specifications for Aero... ... more

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

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. Our proprietary ATLAS attachment system is a durable and dependable mounting platform maintaining a slim... ... more