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 Anodized Black APAR700103M30

Aero Precision Ar15 Comp Assembled Upper 5.56 Nato Carbine Barrel W/Pinned Fsb - Ar-15 16" Complete

AR15 Assembled Upper, 5.56 Nato Carbine Barrel W/Pinned Front sight base MOE SL or MOE SL ML Carbine Handguard - Black Available in 10.5" or 16" barrel. 10.5" Upper Features: Upper: Standard AR15 Upper Receiver Barrel: 10.5" 5.56 Carbine Barrel w/... ... more

Aero Precision Ar15 Comp Assembled Upper 5.56 Nato Carbine Barrel W/Pinned Fsb - Ar-15 16" Complete

AR15 Assembled Upper, 5.56 Nato Carbine Barrel W/Pinned Front sight base MOE SL or MOE SL ML Carbine Handguard - Black Available in 10.5" or 16" barrel. 10.5" Upper Features: Upper: Standard AR15 Upper Receiver Barrel: 10.5" 5.56 Carbine Barrel w/... ... more

Colt M16 R0901 5.56 Complete Upper Receiver Groups - M16 Upper Group 20in M16 Handguard Stripped

M16 Upper Receiver Groups now available from Colt! These 20" Upper Receiver Groups feature the same barrel used on M16A2 and M16A4 rifles, which has a Government profile and feature a chrome lined bore and chamber, along with a 1-7 twist. Colt has... ... more

Aero Precision M4E1-T RM10.3 Complete Upper 5.56 x 45 12.5inch Government Carbine 1-7 Twist 1/2 x 28 Thread Cerakote FDE APAR700713M30

Aero Precision M4E1-T RM10.3 Complete Upper 5.56 x 45 12.5inch Government Carbine 1-7 Twist 1/2 x 28 Thread Cerakote FDE APAR700713M30. 3 5.56 x 45 Complete Upper. Established using several of the most durable and long lasting materials in existence... ... more

Aero Precision M4E1-T SM15 PRO Complete Upper 5.56 x 45 16.3inch Mid Length 1-7 Twist 1/2 x 28 Thread Anodized Kodiak Brown APUG700392M103-1

Aero Precision M4E1-T SM15 PRO Complete Upper 5.56 x 45 16.3inch Mid Length 1-7 Twist 1/2 x 28 Thread Anodized Kodiak Brown APUG700392M103-1. 56 Cold Hammer Forged Barrel that is paired with our PRO 5.56 BCG. Included ATLAS R-ONE Handguard BREACH... ... more

Aero Precision M4E1 Enhanced Complete Upper Receiver 5.56 NATO 14.5 in Barrel Government Profile 1-7 Twist 12 in M-LOK Handguard Pinned VG6 Epsilon

Aero Precision M4E1 Enhanced Complete Upper Receiver 5.56 NATO 14.5 in Barrel Government Profile 1-7 Twist 12 in M-LOK Handguard Pinned VG6 Epsilon. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip... ... more

Aero Precision M4E1-T SM15 Complete Upper 5.56 x 45 16inch HBAR Mid Length 1-7 Twist 1/2 x 28 Thread Cerakote FDE APAR700115M97

Aero Precision M4E1-T SM15 Complete Upper 5.56 x 45 16inch HBAR Mid Length 1-7 Twist 1/2 x 28 Thread Cerakote FDE APAR700115M97. Specifications for Aero Precision M4E1-T SM15 5.56 x 45 Complete Upper: Manufacturer: Aero Precision Cartridge: 5.56x45mm... ... 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 R-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 R-ONE M-LOK. Our proprietary ATLAS attachment system is a durable and dependable mounting platform maintaining a slim... ... 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 Complete Upper M4E1-E 5.56 20in Rifle Barrel 1/7 Twist EQ15 Cerakote Black APAR640251Q48

Aero Precision Complete Upper M4E1-E 5.56 20in Rifle Barrel 1/7 Twist EQ15 Cerakote Black APAR640251Q48. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip and visual appeal and a new profile for the... ... 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 M4E1-E 5.56 20in Rifle Barrel 1/7 Twist EQ15 FDE APAR640252Q48

Aero Precision Complete Upper M4E1-E 5.56 20in Rifle Barrel 1/7 Twist EQ15 FDE APAR640252Q48. 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 top... ... 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 Complete Upper M4E1-T 5.56 8in Pistol Barrel SM7.3 Anodized Black APAR700101M102

Aero Precision Complete Upper M4E1-T 5.56 8in Pistol Barrel SM7.3 Anodized Black APAR700101M102. 56 Complete Upper with Flash Hider then you have arrived at the absolute right place.. These AR15 Upper Receivers through the skilled product specialists... ... more

Aero Precision Complete Upper M4E1-T 5.56 8in Pistol Barrel RM7.3 Anodized Black APAR700701M102

Aero Precision Complete Upper M4E1-T 5.56 8in Pistol Barrel RM7.3 Anodized Black APAR700701M102. 56 Complete Upper with Flash Hider then you have arrived at the absolute right place.. These AR15 Upper Receivers through the skilled product specialists... ... more

Aero Precision Complete Upper Receiver M4E1-T 5.56 16in M4 Barrel 12in M-LOK ATLAS S-ONE Handguard Cerakote Flat Dark Earth APAR700314M6

Aero Precision Complete Upper Receiver M4E1-T 5.56 16in M4 Barrel 12in M-LOK ATLAS S-ONE Handguard Cerakote Flat Dark Earth APAR700314M6. Specifications for Aero Precision M4E1 16in 5.56 ATLAS S-ONE M-LOK Complete Upper Receiver with Flash Hider:... ... more

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 Complete Upper Receiver M4E1-T 14.5in 5.56 Mid Barrel 12in M-LOK ATLAS S-ONE Handguard Flat Dark Earth APAR700314M5. 5in 5.56 Mid-Length w/ ATLAS S-ONE Handguard Complete Upper Receiver with Flash Hider. Aero Precision designed these... ... 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 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 Complete Upper Receiver M4E1-T 20in 5.56 Rifle Length Barrel 15in M-LOK ATLAS S-ONE Handguard Cerakote Flat Dark Earth APAR700315M48

Aero Precision Complete Upper Receiver M4E1-T 20in 5.56 Rifle Length Barrel 15in M-LOK ATLAS S-ONE Handguard Cerakote Flat Dark Earth APAR700315M48. Aero Precision built these AR Handguards & Barrels with their ATLAS S-ONE Handguard and 20in 5.56 Rifle... ... 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

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 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 M4E1 Threaded No Forward Assist Complete Upper Receiver 10.5in 5.56 Carbine RM9.2 Anodized Black APAR712702M2

Aero Precision M4E1 Threaded No Forward Assist Complete Upper Receiver 10.5in 5.56 Carbine RM9.2 Anodized Black APAR712702M2. 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 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

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel M4 Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black STAG15101111

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel M4 Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black STAG15101111. Made to mil-spec standards this upper satisfies the need for a standard GI carbine. Featuring a 5.56x45mm... ... more

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 Cerakote FDE

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 Cerakote FDE. The R-ONE handguards are designed with size and weight in mind while still providing plenty of real-estate... ... more

Aero Precision M4E1 Threaded Complete Upper Receiver 5.56 16in Mid-Length Barrel 1-7 Twist 15in ATLAS S-ONE Handguard A2 Flash Hider Cerakote OD Green

Aero Precision M4E1 Threaded Complete Upper Receiver 5.56 16in Mid-Length Barrel 1-7 Twist 15in ATLAS S-ONE Handguard A2 Flash Hider Cerakote OD Green. 56 Mid Pencil Barrel w/ ATLAS S-ONE Handguard Complete Upper Receiver. These AR15 Upper Receivers... ... more

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel Maryland Compliant HBAR Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel Maryland Compliant HBAR Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider. Made to mil-spec standards this upper satisfies the need for a standard GI carbine. Featuring a 5.56x45mm... ... more

Stag Arms AR-15 Upper Left Hand Receiver 5.56 NATO 16in Barrel Maryland Compliant HBAR Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black

Stag Arms AR-15 Upper Left Hand Receiver 5.56 NATO 16in Barrel Maryland Compliant HBAR Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black. Made to mil-spec standards this upper satisfies the need for a standard GI carbine. Featuring a... ... more

Aero Precision Complete Upper Receiver M4E1-T 5.56x45mm NATO 11.5in Government Carbine Length 1 in 7 1/2 x 28 10.3in A2 Flash Hider Anodized OD Green

Aero Precision Complete Upper Receiver M4E1-T 5.56x45mm NATO 11.5in Government Carbine Length 1 in 7 1/2 x 28 10.3in A2 Flash Hider Anodized OD Green. The R-ONE line of handguards are designed with size and weight in mind providing the perfect addition... ... more

Aero Precision Complete Upper Receiver M4E1-T 18in 5.56 Rifle Length Barrel 15in M-LOK ATLAS S-ONE Handguard Cerakote Flat Dark Earth APAR700315M8

Aero Precision Complete Upper Receiver M4E1-T 18in 5.56 Rifle Length Barrel 15in M-LOK ATLAS S-ONE Handguard Cerakote Flat Dark Earth APAR700315M8. The R-ONE handguards are designed with size and weight in mind while still providing plenty of... ... more

Aero Precision AR-15 Complete Upper Receiver 5.56 Carbine Length 16 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider FDE Cerakote

Aero Precision AR-15 Complete Upper Receiver 5.56 Carbine 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... ... 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

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 R-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 R-ONE Handguard A2 Flash Hider Cerakote OD. The R-ONE line of handguards are designed with size and weight in mind providing the perfect addition to... ... 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