Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 16in M4 Barrel 1-7 Twist A2 Flash Hider ATLAS R-ONE Handguard FDE Cerakote APAR700715M6

Aero Precision M4e1 Assembled Upper Receiver 18" 5.56 Rifle Length - M4e1 5.56mm Assem Uppr Rcvr Gov

The M4E1 5.56mm 18" Rifle Upper Receiver adds two important benefits to Aero Precision's M4E1 carbine upper. First, the longer 18" barrel imparts extra velocity to the bullet with a very small addition to the rifle's OAL. Second, the longer... ... more

Aero Precision M4e1 Assembled Upper Receiver 5.56 Mid-Length - M4e1 5.56 Nato Assem Uppr Rcvr M4 14.

Aero Precision's M4E1 5.56mm Mid-Length Upper Receiver comes fully assembled, lacking only a bolt/carrier group and charging handle - the two components most often replaced by customizers. "Mid-Length" refers to the gas tube, which is longer than... ... more

Aero Precision M4e1 Assembled Upper Receiver 5.56 Mid-Length - M4e1 5.56 Nato Assem Uppr Rcvr M4 16"

Aero Precision's M4E1 5.56mm Mid-Length Upper Receiver comes fully assembled, lacking only a bolt/carrier group and charging handle - the two components most often replaced by customizers. "Mid-Length" refers to the gas tube, which is longer than... ... more

Aero Precision M4E1-T Complete Upper Receiver 5.56mm 12.5in Carbine Length R-One M-LOK Handguard FDE APAR712713M30

Aero Precision M4E1-T Complete Upper Receiver 5.56mm 12.5in Carbine Length R-One M-LOK Handguard FDE APAR712713M30. 5in 5.56mm Complete Upper Receiver then you've come to the right spot.. Developed working with some of the most extremely strong and... ... more

Aero Precision Complete Upper Receiver M4E1-T 5.56x45mm NATO 16in Pencil Mid Length 1 in 7 1/2 x 28 15in A2 Flash Hider Cerakote FDE APAR700715M39

Aero Precision Complete Upper Receiver M4E1-T 5.56x45mm NATO 16in Pencil Mid Length 1 in 7 1/2 x 28 15in A2 Flash Hider Cerakote FDE APAR700715M39. The R-ONE handguards are designed with size and weight in mind while still providing plenty of... ... more

Aero Precision M4E1-T Complete Upper Receiver 5.56mm 11.5in Carbine Length S-One M-LOK Handguard FDE APAR712112M29

Aero Precision M4E1-T Complete Upper Receiver 5.56mm 11.5in Carbine Length S-One M-LOK Handguard FDE APAR712112M29. 5in 5.56 w/ ATLAS S-ONE w/ A2 Flash Hider Handguard Complete Upper Receiver. Each of these AR15 Upper Receivers by Aero Precision... ... more

Ghost Firearms Elite Complete Upper Receiver 5.56x45 NATO 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 7 inch M-LOK Free Float Hand Guard A2 Flash

Ghost Firearms Elite Complete Upper Receiver 5.56x45 NATO 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 7 inch M-LOK Free Float Hand Guard A2 Flash. 56 Upper Receiver. Ghost Firearms machined these Mil-Spec AR15 Upper Receivers from 7075 T6 aluminum... ... more

Aero Precision M4E1 Complete Upper Receiver 18in .223 Wylde Rifle Barrel EM-15 HG Gen 2 Anodized Black APAR640251M42

Aero Precision M4E1 Complete Upper Receiver 18in .223 Wylde Rifle Barrel EM-15 HG Gen 2 Anodized Black APAR640251M42. 223 Wylde Complete Upper Receiver is a one-piece free float design with built-in anti-rotation tabs. These upper receivers AR15 Upper... ... 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

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 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

DEMO Ghost Firearms Upper Receiver Rifle Lower Parts Kit .300 Blackout 16in Pistol Moly Barrel 1-8 Twist 14in M-LOK Free Float Hand Guard A2 Flash

DEMO Ghost Firearms Upper Receiver Rifle Lower Parts Kit .300 Blackout 16in Pistol Moly Barrel 1-8 Twist 14in M-LOK Free Float Hand Guard A2 Flash. 300 Blackout Complete Upper Receiver w/ Rifle Lower Parts Kit you can create a powerful firearm without... ... more

Aero Precision M5E1 Complete Upper Reciever .308 18in Rifle Barrel 1-10 Twist 5/8x24 Thread Free-Float Handguard Cerakote FDE APAR308556M25

Aero Precision M5E1 Complete Upper Reciever .308 18in Rifle Barrel 1-10 Twist 5/8x24 Thread Free-Float Handguard Cerakote FDE APAR308556M25. 308 rifle upper assemblies you can buy. The Aero Precision AR 308 Upper includes an M4 length gas block 18"... ... more

Aero Precision M4E1 Threaded Assembled Upper Receiver M16/AR-15 Anodized Black APAR700201AC

Aero Precision M4E1 Threaded Assembled Upper Receiver M16/AR-15 Anodized Black APAR700201AC. Aero Precision machined these AR15 Upper Receivers from rugged and lightweight 7075-T6 forged aluminum complete with your choice of finish that enhances... ... more

Aero Precision M4E1 Complete Upper Receiver 18in .223 Wylde Rifle Barrel EQ-15 HG Gen 2 Cerakote FDE APAR640252Q42

Aero Precision M4E1 Complete Upper Receiver 18in .223 Wylde Rifle Barrel EQ-15 HG Gen 2 Cerakote FDE APAR640252Q42. 223 Wylde Complete Upper Receiver is a one-piece free float design with built-in anti-rotation tabs. These upper receivers AR15 Upper... ... more

Aero Precision M4E1 Complete Upper Receiver 18in .223 Wylde Rifle Barrel EM-15 HG Gen 2 Cerakote FDE APAR640252M42

Aero Precision M4E1 Complete Upper Receiver 18in .223 Wylde Rifle Barrel EM-15 HG Gen 2 Cerakote FDE APAR640252M42. 223 Wylde Complete Upper Receiver is a one-piece free float design with built-in anti-rotation tabs. These upper receivers AR15 Upper... ... more

Aero Precision M4E1 Complete Upper Receiver 18in .223 Wylde Rifle Barrel EQ-15 HG Gen 2 Anodized Black APAR640251Q42

Aero Precision M4E1 Complete Upper Receiver 18in .223 Wylde Rifle Barrel EQ-15 HG Gen 2 Anodized Black APAR640251Q42. 223 Wylde Complete Upper Receiver is a one-piece free float design with built-in anti-rotation tabs. These upper receivers AR15... ... more

Aero Precision Complete Upper Receiver M4E1 .300 Barrel EQ-7 HG No BCG/Charging Handle Gen 2 FDE Cerakote 8in APAR600212Q1

Aero Precision Complete Upper Receiver M4E1 .300 Barrel EQ-7 HG No BCG/Charging Handle Gen 2 FDE Cerakote 8in APAR600212Q1. 300 Blackout Barrels are equipped with Chrome Moly Vanadium barrels. Along with solid fit and finish these AR15 Upper... ... more

Aero Precision M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EQ-15 HG Gen 2 Anodized Black APAR640251Q6

Aero Precision M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EQ-15 HG Gen 2 Anodized Black APAR640251Q6. 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 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 Complete Upper Receiver M4E1 .300 Barrel EQ-7 HG No BCG/Charging Handle Gen 2 Anodized Black 8in APAR600211Q1

Aero Precision Complete Upper Receiver M4E1 .300 Barrel EQ-7 HG No BCG/Charging Handle Gen 2 Anodized Black 8in APAR600211Q1. 300 Blackout Barrels are equipped with Chrome Moly Vanadium barrels. Along with solid fit and finish these AR15 Upper... ... more

Aero Precision M4E1 Complete Upper Receiver AR-15 18 in Rifle Length Barrel 15 in Quad Rail Handguard No BCH/CH Anodized Black APAR640251Q8

Aero Precision M4E1 Complete Upper Receiver AR-15 18 in Rifle Length Barrel 15 in Quad Rail Handguard No BCH/CH Anodized Black APAR640251Q8. These AR15 Upper Receivers from Aero Precision have an enhanced milling design for grip and visual appeal.... ... more

Aero Precision M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EM-15 HG Gen 2 Anodized Black APAR640251M6

Aero Precision M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EM-15 HG Gen 2 Anodized Black APAR640251M6. 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 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... ... more

Aero Precision Complete Upper Receiver M4E1 .300 Barrel EM-7 HG No BCG/Charging Handle Gen 2 Anodized Black 8in APAR600211M1

Aero Precision Complete Upper Receiver M4E1 .300 Barrel EM-7 HG No BCG/Charging Handle Gen 2 Anodized Black 8in APAR600211M1. 300 Blackout Barrels are equipped with Chrome Moly Vanadium barrels. Along with solid fit and finish these AR15 Upper... ... more

Aero Precision Complete Upper Receiver M4E1 .300 Barrel EM-7 HG No BCG/Charging Handle Gen 2 FDE Cerakote 8in APAR600212M1

Aero Precision Complete Upper Receiver M4E1 .300 Barrel EM-7 HG No BCG/Charging Handle Gen 2 FDE Cerakote 8in APAR600212M1. 300 Blackout Barrels are equipped with Chrome Moly Vanadium barrels. Along with solid fit and finish these AR15 Upper... ... more

Aero Precision M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EQ-12 HG Gen 2 Anodized Black APAR640231Q6

Aero Precision M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EQ-12 HG Gen 2 Anodized Black APAR640231Q6. 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 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... ... 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 M4E1 Complete Upper Receiver AR-15 18 in Rifle Length Barrel 15 in M-LOK Handguard No BCH/CH Anodized Black APAR640251M8

Aero Precision M4E1 Complete Upper Receiver AR-15 18 in Rifle Length Barrel 15 in M-LOK Handguard No BCH/CH Anodized Black APAR640251M8. These AR15 Upper Receivers from Aero Precision have an enhanced milling design for grip and visual appeal. In... ... more

Aero Precision Complete Upper Receiver M4E1 .223 Wylde Mid Barrel EQ-15 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600251Q9

Aero Precision Complete Upper Receiver M4E1 .223 Wylde Mid Barrel EQ-15 HG No BCG/Charging Handle Gen 2 Anodized Black 16in APAR600251Q9. These AR15 Upper Receivers from the trendsetters at Aero Precision comes fully assembled so that you can lock... ... more

Aero Precision M4E1 Complete Upper Receiver 5.56 Mid Barrel EM-12 HG No BCG/Charging Handle Anodized Black 14.5in APAR600231M5

Aero Precision M4E1 Complete Upper Receiver 5.56 Mid Barrel EM-12 HG No BCG/Charging Handle Anodized Black 14.5in APAR600231M5. 56 Mid Barrel EM-12 HG. Formulated by using some of the most extremely robust and dependable materials in existence these... ... more

Aero Precision M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EM-12 HG Gen 2 FDE Cerakote APAR640232M6

Aero Precision M4E1 Complete Upper Receiver 16in 5.56 M4 Carbine Barrel EM-12 HG Gen 2 FDE Cerakote APAR640232M6. 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 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 Complete Upper Receiver M4E1 .223 Wylde Mid Barrel EQ-15 HG No BCG/Charging Handle Gen 2 FDE Cerakote 16in APAR600252Q9

Aero Precision Complete Upper Receiver M4E1 .223 Wylde Mid Barrel EQ-15 HG No BCG/Charging Handle Gen 2 FDE Cerakote 16in APAR600252Q9. These AR15 Upper Receivers from the trendsetters at Aero Precision comes fully assembled so that you can lock in... ... more

Daniel Defense Complete Upper Receiver w/ Flash Hider DDM4-V7-LW 5.56mm NATO 16 in Barrel Low Profile Mid 1-7 Twist Free-Floating MFR XS M-LOK Rail 15

Daniel Defense Complete Upper Receiver w/ Flash Hider DDM4-V7-LW 5.56mm NATO 16 in Barrel Low Profile Mid 1-7 Twist Free-Floating MFR XS M-LOK Rail 15. It features a mid-length gas system for smooth reliable cycling and reduced wear on moving parts.... ... more

Radical Firearms Complete Upper Assembly 16in 300 AAC HBAR Contour 1/8 Twist 12in MHR M-LOK A2 Flash Hider Black CFU16-300HBAR-12MHR

Radical Firearms Complete Upper Assembly 16in 300 AAC HBAR Contour 1/8 Twist 12in MHR M-LOK A2 Flash Hider Black CFU16-300HBAR-12MHR. 62x39 is a MIL-STD upper ready to drop on any MIL-STD lower Receiver. Perfect for the novice or advanced shooter... ... more