Upper Receivers

Grey Ghost Precision

Grey Ghost Precision Forged Upper Receiver

Finally you can grab what Gray Ghost Precision considers the best forged upper in the biz, and it is a perfect companion for your GGP Cornerstone Lower receiver. After all, accuracy comes from tight, precise tolerances that minimize all variables from...

Aero Precision

Aero Precision M5 16" .308 Complete Upper w/ ATLAS R-ONE

The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. The proprietary ATLAS attachment system is a durable and dependable mounting platform,...

CMMG

CMMG Upper Receiver Assembly - MK4

CMMG's Upper Receiver Assembly is made from forged 7075 T6 AL, and ships with dust cover and forward assist assembly installed. The Mk4 platform accepts standard AR15-style magazines, and is the most versatile of the CMMG platforms, especially with the ...

Aero Precision

Aero Precision M5 (.308) Stripped Upper Receiver - FDE Cerakote

The M5 .308 Stripped Upper Receiver is the ideal upper for your big bore rifle build. Forged from 7075- T6 aluminum, this stripped upper is precision machined to accept standard .308 components. It features M4 Feedramps, .2795 takedown pin holes (DPMS...

Aero Precision

Aero Precision M5 .308 Assembled Upper Receiver - FDE Cerakote

The M5 .308 Assembled Upper Receiver comes with both the port door and forward assist hardware preinstalled. Forged from 7075-T6 aluminum, this assembled upper is precision machined to accept standard .308 components and is the ideal upper for your big...

Aero Precision

Aero Precision M4E1 Threaded 16'' 5.56 Mid-Length Complete Upper Receiver w/ ATLAS S-ONE Handguard

This complete upper includes the new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. The proprietary ATLAS attachment system is a durable and...

Aero Precision

Aero Precision M4E1 20" 5.56 Complete Upper w/ ATLAS S-ONE

With this complete upper receiver, you can finish your new build with confidence that you can handle any situation or that you're over-equipped. Aero Precision built these AR Handguards & Barrels with their ATLAS S-ONE Handguard and 20in 5.56 Rifle...

Aero Precision

M5 24" 6.5 Creedmoor SS Complete Upper Receiver w/ ATLAS R-ONE Handguard

The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Our proprietary ATLAS attachment system is a durable and dependable mounting platform,...

Del-Ton

Del-Ton Upper 5.56 11.5" Pistol/LPK

11.5 Pre-Ban Heavy Profile Flat Top Barrel Assembly CARBINE Gas System - Includes - 11.5 1x9 twist Heavy Profile - Chrome Moly Vanadium barrel - Flat Top Upper with White T-Marks & M4 Feed Ramps - HPT/MPI tested Bolt and Carrier assembly - Charging...

Aero Precision

Aero Precision EPC-9 Complete Upper 8.3" - Black

This EPC-9 Complete Upper Receiver comes standard with our ATLAS R-ONE Handguard. The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Our...

Aero Precision

Aero Precision M5 18" .308 CMV Complete Upper Receiver w/ ATLAS R-ONE

This complete upper does not include a BCG or Charging Handle. Includes: M5 Assembled Upper Receiver ATLAS R-ONE 15" Handguard 18" .308 CMV Barrel, Rifle Length Low Profile Gas Block and Rifle Length Gas Tube Product comes assembled M5 Assembled Upper...

Knights Armament Company

KAC SR-15 CQB Mod2 Complete Upper Receiver 11.5"

The SR-15 E3 Mod 2 series' 5.56 mm NATO barrel is manufactured for military grade durability, and is free-floated inside a URX4 M-LOK handguard. An improved E3 round-lug bolt design both enhances function and increases bolt life far beyond the industry...

Aero Precision

Aero Precision AR15 Assembled Upper Receiver - OD Cerakote

The AR15 Assembled Upper Receiver comes with the port door and forward assist already installed. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil- spec M16/M4 specifications and features M4 feedramps. Match this upper with...

Radian Weapons

Radian Model 1 Upper Receiver and Hand Guard - 10" - Black

The Radian Model 1 Upper Receiver and Hand Guard are precision CNC machined as a matching set, structurally reinforced in critical areas for improved strength and rigidity. The upper receiver is cut from billet 7075-T6 aluminum and assembled with dust...

Aero Precision M4E1 16" 5.56 Mid-Length Complete Upper Receiver w/ ATLAS R-ONE Handguard

This complete upper includes our new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Our proprietary ATLAS...

Colt

Colt EPR 11.5 5.56 Complete Upper

High quality components and precise manufacturing makes Colt Products ideal for both new shooters and experienced gun owners. The durability, reliability and excellent build quality will provide years of service you can count on.

Aero Precision

Aero Precision 20" 5.56 Complete Upper w/ Pinned FSB & A2 Handguard

This AR15 Complete Upper is the same upper receiver used in our AERO M16A4 Special Edition Complete Rifle and features a 20" 5.56 Barrel w/ Pinned FSB, A2 Handguard and A2 Detachable Carry Handle.

Daniel Defense

Daniel Defense MK18 URG Complete Upper

Use what THEY use. The Daniel Defense MK18 Upper Receiver Group features the railed forend Daniel Defense currently provides to USSOCOM and a 10.3" Cold Hammer Forged Barrel. The MK18 Rail Interface System (RIS II) features the Bolt-Up System has been...

Sons of Liberty Gun Works

SOLGW Patrol Complete Upper 16" 5.56

Sons of Liberty Gun Works believes in Quality Mil-Spec or better parts. They believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use right out of the box. They believe a quality, accurate and...

Knights Armament Company

KAC SR-15 Mod2 Complete Upper 16" 5.56

The SR-15 E3 Mod 2 series' 5.56 mm NATO barrel is manufactured for military grade durability, and is free-floated inside a URX4 M-LOK handguard. An improved E3 round-lug bolt design both enhances function and increases bolt life far beyond the industry...

Sons of Liberty Gun Works

SOLGW M4-89 Complete Upper 11.5" 5.56

Sons of Liberty Gun Works believes in Quality Mil-Spec or better parts. They believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use right out of the box. They believe a quality, accurate and...

Sons of Liberty Gun Works

SOLGW M4-76 Complete Upper 16" 5.56

Sons of Liberty Gun Works believes in Quality Mil-Spec or better parts. They believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use right out of the box. They believe a quality, accurate and...

Sons of Liberty Gun Works

SOLGW M4-89 Complete Upper 300 Blk 10.5"

Sons of Liberty Gun Works believes in Quality Mil-Spec or better parts. They believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use right out of the box. They believe a quality, accurate and...

Aero Precision

Aero Precision M4E1 Stripped Upper Receiver - No Forward Assist

This upper receiver features the same tried-and-true construction and aesthetics as our M4E1 Threaded Upper Receivers, without provisions for a forward assist. Machined from custom 7075-T6 aluminum forgings this upper receiver is compatible with mil-spec...