AR-15 UPPER RECEIVERS

AR-15 UPPER RECEIVERS

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Aero Precision AR15 Gen 2 Complete Upper - 16" Mid-Length - M-LOK - .223 Wylde

Aero Precision AR15 Gen 2 Complete Upper - 16" Mid-Length - M-LOK - .223 Wylde

Aero Precision AR15 Complete Upper featuring the Gen 2 ATLAS S-ONE Enhanced Handguard. Key features include front and rear picatinny rails, eliminated top center of rail for weight reduction, compatible with low profile gas blocks.

Gen 2 Upper Features:

  • .223 Wylde 16" Midlength Barrel
  • .750 gas block journal
  • Mid-length gas system, .0785 gas port
  • M4 Feed Ramp Extension
  • HP and MPI tested
  • Standard A2 flash hider
  • 15" ATLAS S-ONE M-LOK handguard
  • Does not include BCG or Charging Handle

APAR700305M9

In stock

$544.99

Aero Precision AR15 Gen 2 Complete Upper - 16" Mid-Length - M-LOK - 5.56mm

Aero Precision AR15 Gen 2 Complete Upper - 16" Mid-Length - M-LOK - 5.56mm

Aero Precision AR15 Complete Upper featuring the Gen 2 ATLAS S-ONE Enhanced Handguard. Key features include front and rear picatinny rails, eliminated top center of rail for weight reduction, compatible with low profile gas blocks.

Gen 2 Upper Features:

  • 5.56 NATO 16" Midlength, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled
  • .750 gas block journal
  • Mid-length gas system, .0785 gas port
  • M4 Feed Ramp Extension
  • HP and MPI tested
  • Standard A2 flash hider
  • 15" ATLAS S-ONE M-LOK handguard
  • Does not include BCG or Charging Handle

APAR700305M7

In stock

$499.95

Aero Precision M5 (.308) Stripped Upper Receiver - BLK

Aero Precision M5 (.308) Stripped Upper Receiver - BLK

Precision machined to accept standard .308 components and forged from 7075-T6 aluminum, the Aero Precision M5 upper is the ideal fit for your next big bore build.

Features:

  • M4 Feedramps
  • .2795 takedown pin holes (DPMS size)
  • Lazer engraved T-marks
  • DPMS High Profile (.210) Tang

APAR308503C

In stock

$148.99

Aero Precision AR15 M4E1-E Complete Upper - 7.5" Barrel - M-LOK - 5.56mm

Aero Precision AR15 M4E1-E Complete Upper - 7.5" Barrel - M-LOK - 5.56mm

Aero Precision AR15 Complete Upper featuring the QUANTUM Handguard. Anodized Black.

Features:

  • M4E1-E Threaded Assembled Upper Receiver
  • Quantum 7" Handguard
  • 7.5" 5.56 Pistol Length CMV Barrel
  • Low Profile Gas Block and Pistol Length Gas Tube
  • Product comes assembled
  • New enhanced forging that gives the upper receiver a "billet look"
  • M4 Feedramps
  • .250 takedown pin holes
  • Laser engraved T-marks
  • Includes port door and forward assist installed
  • Does not include BCG or Charging Handle

APAR640101M0

Out of stock

Out of stock
Aero Precision AR15 Stripped Upper/Lower Receiver Set - BLK

Aero Precision AR15 Stripped Upper/Lower Receiver Set - BLK



Upper Receiver Features:

  • Machined from 7075-T6 forged aluminum
  • M4 Feedramps
  • .250” takedown pin holes
  • Works with standard AR15 components

Lower Receiver Features:

  • Machined from 7075-T6 forged aluminum
  • Upper Tension Screw
  • Flared Magwell
  • Rear takedown pin detent hole is threaded for a 4-40 set screw
  • Works with standard AR15 components and magazines

APCS100002S

Out of stock

Out of stock
Aero Precision M4E-T Complete Upper - 16" M4 Barrel - 12" M-LOK - 5.56mm

Aero Precision M4E-T Complete Upper - 16" M4 Barrel - 12" M-LOK - 5.56mm

Aero Precision M4E1-T Complete Upper featuring the ATLAS S-ONE Enhanced Handguard. Key features include front and rear picatinny rails, eliminated top center of rail for weight reduction, compatible with low profile gas blocks. The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to accept a standard AR15 barrel nut. It is forged from 7075-T6 Aluminum, precision machined to work with all mil-spec AR15 parts and includes the port door and forward assist pre-installed.

M4E1-T Upper Features:

  • New enhanced forging that gives the upper receiver a "billet look"
  • New picatinny profile that blends seamlessly with our Enhanced Series Handguards
  • M4 Feedramps
  • .250 takedown pin holes
  • Laser engraved T-marks
  • Includes port door and forward assist installed
  • HP and MPI tested
  • Standard A2 flash hider
  • 12" ATLAS S-ONE M-LOK handguard
  • Does not include BCG or Charging Handle

APAR700304M6

Out of stock

Out of stock
Aero Precision M5 Complete Upper - 12.5" - .308 w/ Atlas R-ONE Handguard

Aero Precision M5 Complete Upper - 12.5" - .308 w/ Atlas R-ONE Handguard

Aero Precision 12.5" .308 CMV Barrel, carbine length upper receiver. Forged upper receiver from 7075 T6 aluminum, .2795 takedown pin holes, Atlas R-ONE handguard with quick disconnect sling sockets at the 3, 6 & 9 o'clock positions. Threading is 5/8 x 24 made up of 4150 chrome moly vanadium and includes dust cover and forward assist.

APAR538704M49

Out of stock

Out of stock

AR-15 Upper Receivers

Find the Upper Receiver Parts You Need for your AR-15 Gun

Customize or begin building sooner with our AR-15 Upper Receivers. We have receivers boasting hard chrome-lined chambers and bores that deliver exceptional endurance and easier maintenance. Choose from a fast 1:7 twist or the popular 1:9 rate in our selection of AR-15 upper receivers. Top names in receiver manufacturing are here, including Rock River Arms, CMMG, and ArmaLite. These makers emphasize testing prior to shipment for your satisfaction. CMMG conducts magnetic particle testing on its barrels, a process which reveals tiny flaws. Order a Carbine Upper Receiver with M4 feed ramps and Bird Cage flash suppressor from this manufacturer.

Get the Rifle You Really Want with AR-15 Upper Receiver Parts

Make a match rifle or a versatile hunting firearm with AR-15 upper receiver parts. The AR15’s modular structure allows you to modify its design to meet your aspirations. Find a flat top so you can reconfigure as needed. We carry an M4 version of the AR15 carbine – its flat top provides a range of sighting options. Many of our AR-15 upper receiver parts are made from higher grade, mil-spec steel and work with existing mil-spec lowers. We’re also your superlative source for AR 15 parts sold individually, from charging handle assemblies to sling mounts.

AR-15 Upper Receiver Assembly Ensures Components Coincide

When you want the complete package, we’re here with assemblies! You can opt for an AR-15 Upper Receiver Assembly featuring a 16-inch barrel and a 1:9 twist, paired with a flash suppressor, mount, bolt assembly and charging handle. A dedicated bolt to match the upper assembly is important to the workings of your AR-15. You’ll also benefit from a handle matched to your barrel. Choose AR-15 upper receiver assemblies backed by precision manufacturing to add to your rifle or when building a firearm from square one.