Aero Precision M4E1-T Complete Upper 20in 6.5 Grendel Stainless Steel Barrel RM15 Anodized Black APAR700725M53

Aero Precision M4e1 Threaded 6.5 Grendel Assembled Upper Receiver W/Atlas R-One - M4e1-T 20" Complet

Upgrade the performance of your AR15 build with this 6.5 Grendel Complete Upper Receiver. Designed to be a low recoil/high accuracy cartridge, the 6.5 Grendel is ideal for those looking to stretch the legs of their AR15 rifle, with proven results at... ... more

Aero Precision M4E1-T Complete Upper 20in 6.5 Grendel Stainless Steel Barrel SM15 Anodized Black APAR700325M53

Aero Precision M4E1-T Complete Upper 20in 6.5 Grendel Stainless Steel Barrel SM15 Anodized Black APAR700325M53. 5 Grendel Complete Upper Receiver. Designed to be a low recoil/high accuracy cartridge the 6.5 Grendel is ideal for those looking to stretch... ... 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 M4E1-T Complete Upper Receiver 16in .223 Wylde Fluted Barrel ATLAS R-ONE 15in M-Lok Handguard Anodized Black APAR700705M50

Aero Precision M4E1-T Complete Upper Receiver 16in .223 Wylde Fluted Barrel ATLAS R-ONE 15in M-Lok Handguard Anodized Black APAR700705M50. 223 Wylde fluted barrel and the ATLAS R-ONE M-LOK handguard. This barreled upper receiver group does not include... ... more

Aero Precision M4E1 Complete Upper 20in 6.5 Grendel Stainless Steel Barrel EM15 Gen 2 HG FDE Cerakote APAR640252M53

Aero Precision M4E1 Complete Upper 20in 6.5 Grendel Stainless Steel Barrel EM15 Gen 2 HG FDE Cerakote APAR640252M53. 5 Grendel Complete Upper Receiver. Designed to be a low recoil/high accuracy cartridge the 6.5 Grendel is ideal for those looking 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 Complete Upper Receiver M4E1-T 10in .300 Blackout Barrel 9in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700302M4

Aero Precision Complete Upper Receiver M4E1-T 10in .300 Blackout Barrel 9in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700302M4. The R-ONE handguards are 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 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 .300 16in Blackout Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700305M14

Aero Precision Complete Upper Receiver M4E1-T .300 16in Blackout Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700305M14. 300 Blackout w/ ATLAS S-ONE Handguard Complete Upper Receiver. Aero Precision built these AR15 Upper Receivers with... ... more

Aero Precision M5E1 Complete Upper Reciever .308 18in Rifle Barrel 1-10 Twist 5/8x24 Thread Free-Float Handguard Stainless Steel Anodized Black

Aero Precision M5E1 Complete Upper Reciever .308 18in Rifle Barrel 1-10 Twist 5/8x24 Thread Free-Float Handguard Stainless Steel Anodized Black. 308 rifle upper assemblies you can buy. The Aero Precision AR 308 Upper includes an M4 length gas block 18"... ... 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 Anodized Black APAR700103M30

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. 3 5.56 x 45 Complete Upper then you've found yourself in the absolute right location.. These AR15 Upper... ... 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 Anodized Black APAR700703M30

Aero Precision M4E1-T RM10.3 Complete Upper 5.56 x 45 12.5inch Government Carbine 1-7 Twist 1/2 x 28 Thread Anodized Black APAR700703M30. 3 5.56 x 45 Complete Upper. Established using several of the most durable and long lasting materials in existence... ... more

Aero Precision Complete Upper Receiver M4E1-T .223 16in Wylde Barrel 12in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700304M9

Aero Precision Complete Upper Receiver M4E1-T .223 16in Wylde Barrel 12in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700304M9. The S-ONE line of handguards are designed with size and weight in mind providing the perfect addition to your lightweight... ... more

Aero Precision Complete Upper Receiver M4E1-T .223 18in Wylde Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700305M42

Aero Precision Complete Upper Receiver M4E1-T .223 18in Wylde Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700305M42. The S-ONE line of handguards are designed with size and weight in mind providing the perfect addition to your... ... 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 M5 Complete Upper Receiver 20in .308 SS Rifle Barrel w/ATLAS S-ONE 15in M-LOK Handguard Anodized Black APAR538105M34

Aero Precision M5 Complete Upper Receiver 20in .308 SS Rifle Barrel w/ATLAS S-ONE 15in M-LOK Handguard Anodized Black APAR538105M34. These AR15 Handguards & Forends from Aero Precision simplify the build process by including everything you need to... ... more

Aero Precision M5 Complete Upper Receiver 20in .308 SS Rifle Barrel w/ATLAS R-ONE 15in M-LOK Handguard Anodized Black APAR538705M34

Aero Precision M5 Complete Upper Receiver 20in .308 SS Rifle Barrel w/ATLAS R-ONE 15in M-LOK Handguard Anodized Black APAR538705M34. 308 SS Complete Upper Receivers w/ ATLAS R-ONE Handguard. These AR15 Upper Receivers by Aero Precision are crafted from... ... more

Aero Precision M5E1 Complete Upper Reciever .308 20in Rifle Barrel 1-10 Twist 5/8x24 Thread Free-Float Handguard Anodized Black APAR308554M27

Aero Precision M5E1 Complete Upper Reciever .308 20in Rifle Barrel 1-10 Twist 5/8x24 Thread Free-Float Handguard Anodized Black APAR308554M27. 308 Barrel Complete Upper Receiver. While there's several options to choose from all of these AR15 Upper... ... more

Aero Precision Complete Upper Receiver M4E1-T .223 16in Wylde Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700305M9

Aero Precision Complete Upper Receiver M4E1-T .223 16in Wylde Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700305M9. The S-ONE line of handguards are designed with size and weight in mind providing the perfect addition to your lightweight... ... more

Aero Precision Complete Upper M4E1-T .350 Legend 16in RM16.6 Anodized Black APAR700705M101

Aero Precision Complete Upper M4E1-T .350 Legend 16in RM16.6 Anodized Black APAR700705M101. 350 Legend Complete Upper with Flash Hider. These AR15 Upper Receivers through the expert product experts at Aero Precision are fashioned by using heavy duty... ... more

Aero Precision M5 Complete Upper Receiver 20in .308 Rifle Barrel w/ATLAS R-ONE 15in M-LOK Handguard Anodized Black APAR538705M27

Aero Precision M5 Complete Upper Receiver 20in .308 Rifle Barrel w/ATLAS R-ONE 15in M-LOK Handguard Anodized Black APAR538705M27. Our proprietary ATLAS attachment system is a durable and dependable mounting platform maintaining a slim profile while... ... more

Aero Precision M5 Complete Upper Receiver 20in .308 CMV Rifle Barrel w/ATLAS S-ONE 15in M-LOK Handguard Anodized Black APAR538105M27

Aero Precision M5 Complete Upper Receiver 20in .308 CMV Rifle Barrel w/ATLAS S-ONE 15in M-LOK Handguard Anodized Black APAR538105M27. To assist in your lightweight build this upper comes outfitted with an ATLAS S-ONE handguard that boasts a front and... ... 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 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 M4E1 Threaded .223 Wylde Complete Upper Receiver 16in Mid-Length Barrel 1-8 Twist A2 Flash Hider ATLAS R-ONE Handguard Black Anodized

Aero Precision M4E1 Threaded .223 Wylde Complete Upper Receiver 16in Mid-Length Barrel 1-8 Twist A2 Flash Hider ATLAS R-ONE Handguard Black Anodized. The R-ONE handguards are designed with size and weight in mind while still providing plenty of... ... 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 M5 Complete Upper Receiver 16in .308 CMV Mid Barrel w/ATLAS S-ONE 15in M-LOK Handguard Anodized Black APAR538105M22

Aero Precision M5 Complete Upper Receiver 16in .308 CMV Mid Barrel w/ATLAS S-ONE 15in M-LOK Handguard Anodized Black APAR538105M22. 308 CMV Complete Upper Receiver w/ ATLAS S-ONE Handguard. This upper by Aero Precision features an ATLAS S-ONE handguard... ... more

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

Aero Precision M5 Complete Upper Receiver 16in .308 CMV Mid Barrel w/ATLAS S-ONE 12in M-LOK Handguard Anodized Black APAR538104M22. 308 CMV Complete Upper Receiver w/ ATLAS S-ONE Handguard. This upper by Aero Precision features an ATLAS S-ONE handguard... ... more

Aero Precision M5 Complete Upper Receiver 16in .308 Mid SS Barrel w/ATLAS R-ONE 12in M-LOK Handguard Anodized Black APAR538704M23

Aero Precision M5 Complete Upper Receiver 16in .308 Mid SS Barrel w/ATLAS R-ONE 12in M-LOK Handguard Anodized Black APAR538704M23. Our proprietary ATLAS attachment system is a durable and dependable mounting platform maintaining a slim profile while... ... more

Aero Precision M5 Complete Upper Receiver 16in .308 Mid Barrel w/ATLAS R-ONE 12in M-LOK Handguard Anodized Black APAR538704M22

Aero Precision M5 Complete Upper Receiver 16in .308 Mid Barrel w/ATLAS R-ONE 12in M-LOK Handguard Anodized Black APAR538704M22. Our proprietary ATLAS attachment system is a durable and dependable mounting platform maintaining a slim profile while still... ... more

Aero Precision M4E1 Threaded .223 Wylde w/ ATLAS R-ONE Handguard Complete Upper Receiver 18 inch Barrel 1-8 Twist A2 Flash Hider Anodized Black

Aero Precision M4E1 Threaded .223 Wylde w/ ATLAS R-ONE Handguard Complete Upper Receiver 18 inch Barrel 1-8 Twist A2 Flash Hider Anodized Black. The R-ONE handguards are designed with size and weight in mind while still providing plenty of real-estate... ... more

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EM-15 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600251M14

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EM-15 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600251M14. 300 BLK Complete Uppers are equipped with CMV medium profile barrels. Along with excellent fit and finish these... ... more

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EQ-15 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600251Q14

Aero Precision Complete Upper Receiver M4E1 .300 Blackout Barrel EQ-15 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600251Q14. 300 BLK Complete Uppers are equipped with CMV medium profile barrels. Along with excellent fit and finish these... ... more

Aero Precision M5 Complete Upper Receiver 16in .308 Mid Barrel w/ATLAS R-ONE 15in M-LOK Handguard Anodized Black APAR538705M22

Aero Precision M5 Complete Upper Receiver 16in .308 Mid Barrel w/ATLAS R-ONE 15in M-LOK Handguard Anodized Black APAR538705M22. Our proprietary ATLAS attachment system is a durable and dependable mounting platform maintaining a slim profile while still... ... 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 M4E1-T Complete Upper Receiver Threaded 5.56x45mm Mid Pencil 16in Barrel ATLAS S-ONE 12in Handguard M-LOK Anodized Black APAR700304M39

Aero Precision M4E1-T Complete Upper Receiver Threaded 5.56x45mm Mid Pencil 16in Barrel ATLAS S-ONE 12in Handguard M-LOK Anodized Black APAR700304M39. 56 Mid Pencil Barrel w/ ATLAS S-ONE Handguard Complete Upper Receiver. These AR15 Upper Receivers... ... more

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 20in 1-7 Twist A2 Flash Hider ATLAS R-ONE Handguard Black Anodized APAR700705M48

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 20in 1-7 Twist A2 Flash Hider ATLAS R-ONE Handguard Black Anodized APAR700705M48. The R-ONE handguards are designed with size and weight in mind while still providing plenty of real-estate to... ... more